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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Data.Text.Lazy</title><link href="ocean.css" rel="stylesheet" type="text/css" title="Ocean" /><script src="haddock-util.js" type="text/javascript"></script><script src="file:///usr/share/javascript/mathjax/MathJax.js" type="text/javascript"></script><script type="text/javascript">//<![CDATA[
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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="src/Data-Text-Lazy.html">Source</a></li><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">text-1.2.2.1: An efficient packed Unicode text type.</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Copyright</th><td>(c) 2009, 2010, 2012 Bryan O'Sullivan</td></tr><tr><th>License</th><td>BSD-style</td></tr><tr><th>Maintainer</th><td>bos@serpentine.com</td></tr><tr><th>Stability</th><td>experimental</td></tr><tr><th>Portability</th><td>GHC</td></tr><tr><th>Safe Haskell</th><td>Trustworthy</td></tr><tr><th>Language</th><td>Haskell98</td></tr></table><p class="caption">Data.Text.Lazy</p></div><div id="table-of-contents"><p class="caption">Contents</p><ul><li><a href="#g:1">Fusion</a></li><li><a href="#g:2">Acceptable data</a></li><li><a href="#g:3">Types</a></li><li><a href="#g:4">Creation and elimination</a></li><li><a href="#g:5">Basic interface</a></li><li><a href="#g:6">Transformations</a><ul><li><a href="#g:7">Case conversion</a></li><li><a href="#g:8">Justification</a></li></ul></li><li><a href="#g:9">Folds</a><ul><li><a href="#g:10">Special folds</a></li></ul></li><li><a href="#g:11">Construction</a><ul><li><a href="#g:12">Scans</a></li><li><a href="#g:13">Accumulating maps</a></li><li><a href="#g:14">Generation and unfolding</a></li></ul></li><li><a href="#g:15">Substrings</a><ul><li><a href="#g:16">Breaking strings</a></li><li><a href="#g:17">Breaking into many substrings</a></li><li><a href="#g:18">Breaking into lines and words</a></li></ul></li><li><a href="#g:19">Predicates</a><ul><li><a href="#g:20">View patterns</a></li></ul></li><li><a href="#g:21">Searching</a></li><li><a href="#g:22">Indexing</a></li><li><a href="#g:23">Zipping and unzipping</a></li><li><a href="#section.orphans">Orphan instances</a></li></ul></div><div id="description"><p class="caption">Description</p><div class="doc"><p>A time and space-efficient implementation of Unicode text using
 lists of packed arrays.</p><p><em>Note</em>: Read below the synopsis for important notes on the use of
 this module.</p><p>The representation used by this module is suitable for high
 performance use and for streaming large quantities of data.  It
 provides a means to manipulate a large body of text without
 requiring that the entire content be resident in memory.</p><p>Some operations, such as <code><a href="Data-Text-Lazy.html#v:concat">concat</a></code>, <code><a href="Data-Text-Lazy.html#v:append">append</a></code>, <code><a href="Data-Text-Lazy.html#v:reverse">reverse</a></code> and <code><a href="Data-Text-Lazy.html#v:cons">cons</a></code>,
 have better time complexity than their <a href="Data-Text.html">Data.Text</a> equivalents, due
 to the underlying representation being a list of chunks. For other
 operations, lazy <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>s are usually within a few percent of strict
 ones, but often with better heap usage if used in a streaming
 fashion. For data larger than available memory, or if you have
 tight memory constraints, this module will be the only option.</p><p>This module is intended to be imported <code>qualified</code>, to avoid name
 clashes with <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Prelude.html">Prelude</a> functions.  eg.</p><pre>import qualified Data.Text.Lazy as L</pre></div></div><div id="synopsis"><p id="control.syn" class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><span class="keyword">data</span> <a href="#t:Text">Text</a></li><li class="src short"><a href="#v:pack">pack</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:String">String</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:unpack">unpack</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:String">String</a></li><li class="src short"><a href="#v:singleton">singleton</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:empty">empty</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:fromChunks">fromChunks</a> :: [<a href="Data-Text.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:toChunks">toChunks</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text.html#t:Text">Text</a>]</li><li class="src short"><a href="#v:toStrict">toStrict</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text.html#t:Text">Text</a></li><li class="src short"><a href="#v:fromStrict">fromStrict</a> :: <a href="Data-Text.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:foldrChunks">foldrChunks</a> :: (<a href="Data-Text.html#t:Text">Text</a> -&gt; a -&gt; a) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; a</li><li class="src short"><a href="#v:foldlChunks">foldlChunks</a> :: (a -&gt; <a href="Data-Text.html#t:Text">Text</a> -&gt; a) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; a</li><li class="src short"><a href="#v:cons">cons</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:snoc">snoc</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:append">append</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:uncons">uncons</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>)</li><li class="src short"><a href="#v:head">head</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:last">last</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:tail">tail</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:init">init</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:null">null</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:length">length</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a></li><li class="src short"><a href="#v:compareLength">compareLength</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Ord.html#t:Ordering">Ordering</a></li><li class="src short"><a href="#v:map">map</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:intercalate">intercalate</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:intersperse">intersperse</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:transpose">transpose</a> :: [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>]</li><li class="src short"><a href="#v:reverse">reverse</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:replace">replace</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:toCaseFold">toCaseFold</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:toLower">toLower</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:toUpper">toUpper</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:toTitle">toTitle</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:justifyLeft">justifyLeft</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:justifyRight">justifyRight</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:center">center</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:foldl">foldl</a> :: (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; a) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; a</li><li class="src short"><a href="#v:foldl-39-">foldl'</a> :: (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; a) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; a</li><li class="src short"><a href="#v:foldl1">foldl1</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:foldl1-39-">foldl1'</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:foldr">foldr</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; a -&gt; a) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; a</li><li class="src short"><a href="#v:foldr1">foldr1</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:concat">concat</a> :: [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:concatMap">concatMap</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:any">any</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:all">all</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:maximum">maximum</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:minimum">minimum</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:scanl">scanl</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:scanl1">scanl1</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:scanr">scanr</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:scanr1">scanr1</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:mapAccumL">mapAccumL</a> :: (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; (a, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>)) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (a, <a href="Data-Text-Lazy.html#t:Text">Text</a>)</li><li class="src short"><a href="#v:mapAccumR">mapAccumR</a> :: (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; (a, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>)) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (a, <a href="Data-Text-Lazy.html#t:Text">Text</a>)</li><li class="src short"><a href="#v:repeat">repeat</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:replicate">replicate</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:cycle">cycle</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:iterate">iterate</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:unfoldr">unfoldr</a> :: (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>, a)) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:unfoldrN">unfoldrN</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>, a)) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:take">take</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:takeEnd">takeEnd</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:drop">drop</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:dropEnd">dropEnd</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:takeWhile">takeWhile</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:takeWhileEnd">takeWhileEnd</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:dropWhile">dropWhile</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:dropWhileEnd">dropWhileEnd</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:dropAround">dropAround</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:strip">strip</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:stripStart">stripStart</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:stripEnd">stripEnd</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:splitAt">splitAt</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>)</li><li class="src short"><a href="#v:span">span</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>)</li><li class="src short"><a href="#v:breakOn">breakOn</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>)</li><li class="src short"><a href="#v:breakOnEnd">breakOnEnd</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>)</li><li class="src short"><a href="#v:break">break</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>)</li><li class="src short"><a href="#v:group">group</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>]</li><li class="src short"><a href="#v:groupBy">groupBy</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>]</li><li class="src short"><a href="#v:inits">inits</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>]</li><li class="src short"><a href="#v:tails">tails</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>]</li><li class="src short"><a href="#v:splitOn">splitOn</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>]</li><li class="src short"><a href="#v:split">split</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>]</li><li class="src short"><a href="#v:chunksOf">chunksOf</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>]</li><li class="src short"><a href="#v:lines">lines</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>]</li><li class="src short"><a href="#v:words">words</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>]</li><li class="src short"><a href="#v:unlines">unlines</a> :: [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:unwords">unwords</a> :: [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:isPrefixOf">isPrefixOf</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:isSuffixOf">isSuffixOf</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:isInfixOf">isInfixOf</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a></li><li class="src short"><a href="#v:stripPrefix">stripPrefix</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:stripSuffix">stripSuffix</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:commonPrefixes">commonPrefixes</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>)</li><li class="src short"><a href="#v:filter">filter</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li><li class="src short"><a href="#v:find">find</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:breakOnAll">breakOnAll</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [(<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>)]</li><li class="src short"><a href="#v:partition">partition</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>)</li><li class="src short"><a href="#v:index">index</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></li><li class="src short"><a href="#v:count">count</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a></li><li class="src short"><a href="#v:zip">zip</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [(<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>)]</li><li class="src short"><a href="#v:zipWith">zipWith</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></li></ul></div><div id="interface"><h1 id="g:1">Fusion</h1><div class="doc"><p>Most of the functions in this module are subject to <em>fusion</em>,
 meaning that a pipeline of such functions will usually allocate at
 most one <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> value.</p><p>As an example, consider the following pipeline:</p><pre>import Data.Text.Lazy as T
import Data.Text.Lazy.Encoding as E
import Data.ByteString.Lazy (ByteString)

countChars :: ByteString -&gt; Int
countChars = T.length . T.toUpper . E.decodeUtf8</pre><p>From the type signatures involved, this looks like it should
 allocate one <code>ByteString</code> value, and two <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> values. However,
 when a module is compiled with optimisation enabled under GHC, the
 two intermediate <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> values will be optimised away, and the
 function will be compiled down to a single loop over the source
 <code>ByteString</code>.</p><p>Functions that can be fused by the compiler are documented with the
 phrase &quot;Subject to fusion&quot;.</p></div><h1 id="g:2">Acceptable data</h1><div class="doc"><p>A <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> value is a sequence of Unicode scalar values, as defined
 in &#167;3.9, definition D76 of the Unicode 5.2 standard:
 <a href="http://www.unicode.org/versions/Unicode5.2.0/ch03.pdf#page=35">http://www.unicode.org/versions/Unicode5.2.0/ch03.pdf#page=35</a>. As
 such, a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> cannot contain values in the range U+D800 to U+DFFF
 inclusive. Haskell implementations admit all Unicode code points
 (&#167;3.4, definition D10) as <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></code> values, including code points
 from this invalid range.  This means that there are some <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></code>
 values that are not valid Unicode scalar values, and the functions
 in this module must handle those cases.</p><p>Within this module, many functions construct a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> from one or
 more <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></code> values. Those functions will substitute <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></code> values
 that are not valid Unicode scalar values with the replacement
 character &quot;&#65533;&quot; (U+FFFD).  Functions that perform this
 inspection and replacement are documented with the phrase
 &quot;Performs replacement on invalid scalar values&quot;.</p><p>(One reason for this policy of replacement is that internally, a
 <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> value is represented as packed UTF-16 data. Values in the
 range U+D800 through U+DFFF are used by UTF-16 to denote surrogate
 code points, and so cannot be represented. The functions replace
 invalid scalar values, instead of dropping them, as a security
 measure. For details, see Unicode Technical Report 36, &#167;3.5:
 <a href="http://unicode.org/reports/tr36#Deletion_of_Noncharacters">http://unicode.org/reports/tr36#Deletion_of_Noncharacters</a>)</p></div><h1 id="g:3">Types</h1><div class="top"><p class="src"><span class="keyword">data</span> <a id="t:Text" class="def">Text</a> <a href="src/Data-Text-Internal-Lazy.html#Text" class="link">Source</a> <a href="#t:Text" class="selflink">#</a></p><div class="subs instances"><p id="control.i:Text" class="caption collapser" onclick="toggleSection('i:Text')">Instances</p><div id="section.i:Text" class="show"><table><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:id:Text:Item:1" class="instance expander" onclick="toggleSection('i:id:Text:Item:1')"></span> <span class="keyword">type</span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/GHC-Exts.html#t:Item">Item</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="#t:Item" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:id:Text:Item:1" class="inst-details hide"><div class="src"><span class="keyword">type</span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/GHC-Exts.html#t:Item">Item</a> <a href="Data-Text-Lazy.html#t:Text">Text</a> = <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></div></div></td></tr></table></div></div></div><h1 id="g:4">Creation and elimination</h1><div class="top"><p class="src"><a id="v:pack" class="def">pack</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:String">String</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#pack" class="link">Source</a> <a href="#v:pack" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Convert a <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:String">String</a></code> into a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.</p><p>Subject to fusion.  Performs replacement on invalid scalar values.</p></div></div><div class="top"><p class="src"><a id="v:unpack" class="def">unpack</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:String">String</a> <a href="src/Data-Text-Lazy.html#unpack" class="link">Source</a> <a href="#v:unpack" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Convert a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> into a <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:String">String</a></code>.
 Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:singleton" class="def">singleton</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#singleton" class="link">Source</a> <a href="#v:singleton" class="selflink">#</a></p><div class="doc"><p><em>O(1)</em> Convert a character into a Text.  Subject to fusion.
 Performs replacement on invalid scalar values.</p></div></div><div class="top"><p class="src"><a id="v:empty" class="def">empty</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Internal-Lazy.html#empty" class="link">Source</a> <a href="#v:empty" class="selflink">#</a></p><div class="doc"><p>Smart constructor for <code><a href="Data-Text-Internal-Lazy.html#v:Empty">Empty</a></code>.</p></div></div><div class="top"><p class="src"><a id="v:fromChunks" class="def">fromChunks</a> :: [<a href="Data-Text.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#fromChunks" class="link">Source</a> <a href="#v:fromChunks" class="selflink">#</a></p><div class="doc"><p><em>O(c)</em> Convert a list of strict <code><a href="Data-Text.html#t:Text">Text</a></code>s into a lazy <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.</p></div></div><div class="top"><p class="src"><a id="v:toChunks" class="def">toChunks</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text.html#t:Text">Text</a>] <a href="src/Data-Text-Lazy.html#toChunks" class="link">Source</a> <a href="#v:toChunks" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Convert a lazy <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> into a list of strict <code><a href="Data-Text.html#t:Text">Text</a></code>s.</p></div></div><div class="top"><p class="src"><a id="v:toStrict" class="def">toStrict</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#toStrict" class="link">Source</a> <a href="#v:toStrict" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Convert a lazy <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> into a strict <code><a href="Data-Text.html#t:Text">Text</a></code>.</p></div></div><div class="top"><p class="src"><a id="v:fromStrict" class="def">fromStrict</a> :: <a href="Data-Text.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#fromStrict" class="link">Source</a> <a href="#v:fromStrict" class="selflink">#</a></p><div class="doc"><p><em>O(c)</em> Convert a strict <code><a href="Data-Text.html#t:Text">Text</a></code> into a lazy <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.</p></div></div><div class="top"><p class="src"><a id="v:foldrChunks" class="def">foldrChunks</a> :: (<a href="Data-Text.html#t:Text">Text</a> -&gt; a -&gt; a) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; a <a href="src/Data-Text-Internal-Lazy.html#foldrChunks" class="link">Source</a> <a href="#v:foldrChunks" class="selflink">#</a></p><div class="doc"><p>Consume the chunks of a lazy <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> with a natural right fold.</p></div></div><div class="top"><p class="src"><a id="v:foldlChunks" class="def">foldlChunks</a> :: (a -&gt; <a href="Data-Text.html#t:Text">Text</a> -&gt; a) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; a <a href="src/Data-Text-Internal-Lazy.html#foldlChunks" class="link">Source</a> <a href="#v:foldlChunks" class="selflink">#</a></p><div class="doc"><p>Consume the chunks of a lazy <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> with a strict, tail-recursive,
 accumulating left fold.</p></div></div><h1 id="g:5">Basic interface</h1><div class="top"><p class="src"><a id="v:cons" class="def">cons</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <span class="fixity">infixr 5</span><span class="rightedge"></span> <a href="src/Data-Text-Lazy.html#cons" class="link">Source</a> <a href="#v:cons" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Adds a character to the front of a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.  This function
 is more costly than its <code>List</code> counterpart because it requires
 copying a new array.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:snoc" class="def">snoc</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#snoc" class="link">Source</a> <a href="#v:snoc" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Adds a character to the end of a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.  This copies the
 entire array in the process, unless fused.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:append" class="def">append</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#append" class="link">Source</a> <a href="#v:append" class="selflink">#</a></p><div class="doc"><p><em>O(n/c)</em> Appends one <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> to another.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:uncons" class="def">uncons</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="src/Data-Text-Lazy.html#uncons" class="link">Source</a> <a href="#v:uncons" class="selflink">#</a></p><div class="doc"><p><em>O(1)</em> Returns the first character and rest of a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, or
 <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#v:Nothing">Nothing</a></code> if empty. Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:head" class="def">head</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Text-Lazy.html#head" class="link">Source</a> <a href="#v:head" class="selflink">#</a></p><div class="doc"><p><em>O(1)</em> Returns the first character of a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, which must be
 non-empty.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:last" class="def">last</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Text-Lazy.html#last" class="link">Source</a> <a href="#v:last" class="selflink">#</a></p><div class="doc"><p><em>O(1)</em> Returns the last character of a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, which must be
 non-empty.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:tail" class="def">tail</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#tail" class="link">Source</a> <a href="#v:tail" class="selflink">#</a></p><div class="doc"><p><em>O(1)</em> Returns all characters after the head of a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, which
 must be non-empty.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:init" class="def">init</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#init" class="link">Source</a> <a href="#v:init" class="selflink">#</a></p><div class="doc"><p><em>O(1)</em> Returns all but the last character of a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, which must
 be non-empty.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:null" class="def">null</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Text-Lazy.html#null" class="link">Source</a> <a href="#v:null" class="selflink">#</a></p><div class="doc"><p><em>O(1)</em> Tests whether a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> is empty or not.  Subject to
 fusion.</p></div></div><div class="top"><p class="src"><a id="v:length" class="def">length</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> <a href="src/Data-Text-Lazy.html#length" class="link">Source</a> <a href="#v:length" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Returns the number of characters in a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.
 Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:compareLength" class="def">compareLength</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Ord.html#t:Ordering">Ordering</a> <a href="src/Data-Text-Lazy.html#compareLength" class="link">Source</a> <a href="#v:compareLength" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Compare the count of characters in a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> to a number.
 Subject to fusion.</p><p>This function gives the same answer as comparing against the result
 of <code><a href="Data-Text-Lazy.html#v:length">length</a></code>, but can short circuit if the count of characters is
 greater than the number, and hence be more efficient.</p></div></div><h1 id="g:6">Transformations</h1><div class="top"><p class="src"><a id="v:map" class="def">map</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#map" class="link">Source</a> <a href="#v:map" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:map">map</a></code> <code>f</code> <code>t</code> is the <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> obtained by applying <code>f</code> to
 each element of <code>t</code>.  Subject to fusion.  Performs replacement on
 invalid scalar values.</p></div></div><div class="top"><p class="src"><a id="v:intercalate" class="def">intercalate</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#intercalate" class="link">Source</a> <a href="#v:intercalate" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> The <code><a href="Data-Text-Lazy.html#v:intercalate">intercalate</a></code> function takes a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> and a list of
 <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>s and concatenates the list after interspersing the first
 argument between each element of the list.</p></div></div><div class="top"><p class="src"><a id="v:intersperse" class="def">intersperse</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#intersperse" class="link">Source</a> <a href="#v:intersperse" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> The <code><a href="Data-Text-Lazy.html#v:intersperse">intersperse</a></code> function takes a character and places it
 between the characters of a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.  Subject to fusion.  Performs
 replacement on invalid scalar values.</p></div></div><div class="top"><p class="src"><a id="v:transpose" class="def">transpose</a> :: [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="src/Data-Text-Lazy.html#transpose" class="link">Source</a> <a href="#v:transpose" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> The <code><a href="Data-Text-Lazy.html#v:transpose">transpose</a></code> function transposes the rows and columns
 of its <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> argument.  Note that this function uses <code><a href="Data-Text-Lazy.html#v:pack">pack</a></code>,
 <code><a href="Data-Text-Lazy.html#v:unpack">unpack</a></code>, and the list version of transpose, and is thus not very
 efficient.</p></div></div><div class="top"><p class="src"><a id="v:reverse" class="def">reverse</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#reverse" class="link">Source</a> <a href="#v:reverse" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:reverse">reverse</a></code> <code>t</code> returns the elements of <code>t</code> in reverse order.</p></div></div><div class="top"><p class="src"><a id="v:replace" class="def">replace</a> <a href="src/Data-Text-Lazy.html#replace" class="link">Source</a> <a href="#v:replace" class="selflink">#</a></p><div class="subs arguments"><p class="caption">Arguments</p><table><tr><td class="src">:: <a href="Data-Text-Lazy.html#t:Text">Text</a></td><td class="doc"><p><code>needle</code> to search for.  If this string is empty, an
 error will occur.</p></td></tr><tr><td class="src">-&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></td><td class="doc"><p><code>replacement</code> to replace <code>needle</code> with.</p></td></tr><tr><td class="src">-&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></td><td class="doc"><p><code>haystack</code> in which to search.</p></td></tr><tr><td class="src">-&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></td><td class="doc empty">&nbsp;</td></tr></table></div><div class="doc"><p><em>O(m+n)</em> Replace every non-overlapping occurrence of <code>needle</code> in
 <code>haystack</code> with <code>replacement</code>.</p><p>This function behaves as though it was defined as follows:</p><pre>replace needle replacement haystack =
  <code><a href="Data-Text-Lazy.html#v:intercalate">intercalate</a></code> replacement (<code><a href="Data-Text-Lazy.html#v:splitOn">splitOn</a></code> needle haystack)
</pre><p>As this suggests, each occurrence is replaced exactly once.  So if
 <code>needle</code> occurs in <code>replacement</code>, that occurrence will <em>not</em> itself
 be replaced recursively:</p><pre>replace &quot;oo&quot; &quot;foo&quot; &quot;oo&quot; == &quot;foo&quot;</pre><p>In cases where several instances of <code>needle</code> overlap, only the
 first one will be replaced:</p><pre>replace &quot;ofo&quot; &quot;bar&quot; &quot;ofofo&quot; == &quot;barfo&quot;</pre><p>In (unlikely) bad cases, this function's time complexity degrades
 towards <em>O(n*m)</em>.</p></div></div><h2 id="g:7">Case conversion</h2><div class="doc"><p>With Unicode text, it is incorrect to use combinators like <code>map
 toUpper</code> to case convert each character of a string individually.
 Instead, use the whole-string case conversion functions from this
 module.  For correctness in different writing systems, these
 functions may map one input character to two or three output
 characters.</p></div><div class="top"><p class="src"><a id="v:toCaseFold" class="def">toCaseFold</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#toCaseFold" class="link">Source</a> <a href="#v:toCaseFold" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Convert a string to folded case.  Subject to fusion.</p><p>This function is mainly useful for performing caseless (or case
 insensitive) string comparisons.</p><p>A string <code>x</code> is a caseless match for a string <code>y</code> if and only if:</p><pre>toCaseFold x == toCaseFold y</pre><p>The result string may be longer than the input string, and may
 differ from applying <code><a href="Data-Text-Lazy.html#v:toLower">toLower</a></code> to the input string.  For instance,
 the Armenian small ligature men now (U+FB13) is case folded to the
 bigram men now (U+0574 U+0576), while the micro sign (U+00B5) is
 case folded to the Greek small letter letter mu (U+03BC) instead of
 itself.</p></div></div><div class="top"><p class="src"><a id="v:toLower" class="def">toLower</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#toLower" class="link">Source</a> <a href="#v:toLower" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Convert a string to lower case, using simple case
 conversion.  Subject to fusion.</p><p>The result string may be longer than the input string.  For
 instance, the Latin capital letter I with dot above (U+0130) maps
 to the sequence Latin small letter i (U+0069) followed by combining
 dot above (U+0307).</p></div></div><div class="top"><p class="src"><a id="v:toUpper" class="def">toUpper</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#toUpper" class="link">Source</a> <a href="#v:toUpper" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Convert a string to upper case, using simple case
 conversion.  Subject to fusion.</p><p>The result string may be longer than the input string.  For
 instance, the German eszett (U+00DF) maps to the two-letter
 sequence SS.</p></div></div><div class="top"><p class="src"><a id="v:toTitle" class="def">toTitle</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#toTitle" class="link">Source</a> <a href="#v:toTitle" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Convert a string to title case, using simple case
 conversion.  Subject to fusion.</p><p>The first letter of the input is converted to title case, as is
 every subsequent letter that immediately follows a non-letter.
 Every letter that immediately follows another letter is converted
 to lower case.</p><p>The result string may be longer than the input string. For example,
 the Latin small ligature &#64258; (U+FB02) is converted to the
 sequence Latin capital letter F (U+0046) followed by Latin small
 letter l (U+006C).</p><p><em>Note</em>: this function does not take language or culture specific
 rules into account. For instance, in English, different style
 guides disagree on whether the book name &quot;The Hill of the Red
 Fox&quot; is correctly title cased&#8212;but this function will
 capitalize <em>every</em> word.</p></div></div><h2 id="g:8">Justification</h2><div class="top"><p class="src"><a id="v:justifyLeft" class="def">justifyLeft</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#justifyLeft" class="link">Source</a> <a href="#v:justifyLeft" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Left-justify a string to the given length, using the
 specified fill character on the right. Subject to fusion.  Performs
 replacement on invalid scalar values.</p><p>Examples:</p><pre>justifyLeft 7 'x' &quot;foo&quot;    == &quot;fooxxxx&quot;
justifyLeft 3 'x' &quot;foobar&quot; == &quot;foobar&quot;</pre></div></div><div class="top"><p class="src"><a id="v:justifyRight" class="def">justifyRight</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#justifyRight" class="link">Source</a> <a href="#v:justifyRight" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Right-justify a string to the given length, using the
 specified fill character on the left.  Performs replacement on
 invalid scalar values.</p><p>Examples:</p><pre>justifyRight 7 'x' &quot;bar&quot;    == &quot;xxxxbar&quot;
justifyRight 3 'x' &quot;foobar&quot; == &quot;foobar&quot;</pre></div></div><div class="top"><p class="src"><a id="v:center" class="def">center</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#center" class="link">Source</a> <a href="#v:center" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Center a string to the given length, using the specified
 fill character on either side.  Performs replacement on invalid
 scalar values.</p><p>Examples:</p><pre>center 8 'x' &quot;HS&quot; = &quot;xxxHSxxx&quot;</pre></div></div><h1 id="g:9">Folds</h1><div class="top"><p class="src"><a id="v:foldl" class="def">foldl</a> :: (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; a) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; a <a href="src/Data-Text-Lazy.html#foldl" class="link">Source</a> <a href="#v:foldl" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:foldl">foldl</a></code>, applied to a binary operator, a starting value
 (typically the left-identity of the operator), and a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>,
 reduces the <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> using the binary operator, from left to right.
 Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:foldl-39-" class="def">foldl'</a> :: (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; a) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; a <a href="src/Data-Text-Lazy.html#foldl%27" class="link">Source</a> <a href="#v:foldl-39-" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> A strict version of <code><a href="Data-Text-Lazy.html#v:foldl">foldl</a></code>.
 Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:foldl1" class="def">foldl1</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Text-Lazy.html#foldl1" class="link">Source</a> <a href="#v:foldl1" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> A variant of <code><a href="Data-Text-Lazy.html#v:foldl">foldl</a></code> that has no starting value argument,
 and thus must be applied to a non-empty <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:foldl1-39-" class="def">foldl1'</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Text-Lazy.html#foldl1%27" class="link">Source</a> <a href="#v:foldl1-39-" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> A strict version of <code><a href="Data-Text-Lazy.html#v:foldl1">foldl1</a></code>.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:foldr" class="def">foldr</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; a -&gt; a) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; a <a href="src/Data-Text-Lazy.html#foldr" class="link">Source</a> <a href="#v:foldr" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:foldr">foldr</a></code>, applied to a binary operator, a starting value
 (typically the right-identity of the operator), and a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>,
 reduces the <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> using the binary operator, from right to left.
 Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:foldr1" class="def">foldr1</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Text-Lazy.html#foldr1" class="link">Source</a> <a href="#v:foldr1" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> A variant of <code><a href="Data-Text-Lazy.html#v:foldr">foldr</a></code> that has no starting value argument,
 and thus must be applied to a non-empty <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.  Subject to
 fusion.</p></div></div><h2 id="g:10">Special folds</h2><div class="top"><p class="src"><a id="v:concat" class="def">concat</a> :: [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#concat" class="link">Source</a> <a href="#v:concat" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Concatenate a list of <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>s.</p></div></div><div class="top"><p class="src"><a id="v:concatMap" class="def">concatMap</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#concatMap" class="link">Source</a> <a href="#v:concatMap" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Map a function over a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> that results in a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, and
 concatenate the results.</p></div></div><div class="top"><p class="src"><a id="v:any" class="def">any</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Text-Lazy.html#any" class="link">Source</a> <a href="#v:any" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:any">any</a></code> <code>p</code> <code>t</code> determines whether any character in the
 <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> <code>t</code> satisfies the predicate <code>p</code>. Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:all" class="def">all</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Text-Lazy.html#all" class="link">Source</a> <a href="#v:all" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:all">all</a></code> <code>p</code> <code>t</code> determines whether all characters in the
 <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> <code>t</code> satisfy the predicate <code>p</code>. Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:maximum" class="def">maximum</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Text-Lazy.html#maximum" class="link">Source</a> <a href="#v:maximum" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:maximum">maximum</a></code> returns the maximum value from a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, which
 must be non-empty. Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:minimum" class="def">minimum</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Text-Lazy.html#minimum" class="link">Source</a> <a href="#v:minimum" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:minimum">minimum</a></code> returns the minimum value from a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, which
 must be non-empty. Subject to fusion.</p></div></div><h1 id="g:11">Construction</h1><h2 id="g:12">Scans</h2><div class="top"><p class="src"><a id="v:scanl" class="def">scanl</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#scanl" class="link">Source</a> <a href="#v:scanl" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:scanl">scanl</a></code> is similar to <code><a href="Data-Text-Lazy.html#v:foldl">foldl</a></code>, but returns a list of
 successive reduced values from the left. Subject to fusion.
 Performs replacement on invalid scalar values.</p><pre>scanl f z [x1, x2, ...] == [z, z `f` x1, (z `f` x1) `f` x2, ...]</pre><p>Note that</p><pre>last (scanl f z xs) == foldl f z xs.</pre></div></div><div class="top"><p class="src"><a id="v:scanl1" class="def">scanl1</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#scanl1" class="link">Source</a> <a href="#v:scanl1" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:scanl1">scanl1</a></code> is a variant of <code><a href="Data-Text-Lazy.html#v:scanl">scanl</a></code> that has no starting
 value argument.  Subject to fusion.  Performs replacement on
 invalid scalar values.</p><pre>scanl1 f [x1, x2, ...] == [x1, x1 `f` x2, ...]</pre></div></div><div class="top"><p class="src"><a id="v:scanr" class="def">scanr</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#scanr" class="link">Source</a> <a href="#v:scanr" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:scanr">scanr</a></code> is the right-to-left dual of <code><a href="Data-Text-Lazy.html#v:scanl">scanl</a></code>.  Performs
 replacement on invalid scalar values.</p><pre>scanr f v == reverse . scanl (flip f) v . reverse</pre></div></div><div class="top"><p class="src"><a id="v:scanr1" class="def">scanr1</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#scanr1" class="link">Source</a> <a href="#v:scanr1" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:scanr1">scanr1</a></code> is a variant of <code><a href="Data-Text-Lazy.html#v:scanr">scanr</a></code> that has no starting
 value argument.  Performs replacement on invalid scalar values.</p></div></div><h2 id="g:13">Accumulating maps</h2><div class="top"><p class="src"><a id="v:mapAccumL" class="def">mapAccumL</a> :: (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; (a, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>)) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (a, <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="src/Data-Text-Lazy.html#mapAccumL" class="link">Source</a> <a href="#v:mapAccumL" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Like a combination of <code><a href="Data-Text-Lazy.html#v:map">map</a></code> and <code><a href="Data-Text-Lazy.html#v:foldl-39-">foldl'</a></code>. Applies a
 function to each element of a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, passing an accumulating
 parameter from left to right, and returns a final <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.  Performs
 replacement on invalid scalar values.</p></div></div><div class="top"><p class="src"><a id="v:mapAccumR" class="def">mapAccumR</a> :: (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; (a, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>)) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (a, <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="src/Data-Text-Lazy.html#mapAccumR" class="link">Source</a> <a href="#v:mapAccumR" class="selflink">#</a></p><div class="doc"><p>The <code><a href="Data-Text-Lazy.html#v:mapAccumR">mapAccumR</a></code> function behaves like a combination of <code><a href="Data-Text-Lazy.html#v:map">map</a></code> and
 a strict <code><a href="Data-Text-Lazy.html#v:foldr">foldr</a></code>; it applies a function to each element of a
 <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, passing an accumulating parameter from right to left, and
 returning a final value of this accumulator together with the new
 <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.  Performs replacement on invalid scalar values.</p></div></div><h2 id="g:14">Generation and unfolding</h2><div class="top"><p class="src"><a id="v:repeat" class="def">repeat</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#repeat" class="link">Source</a> <a href="#v:repeat" class="selflink">#</a></p><div class="doc"><p><code><code><a href="Data-Text-Lazy.html#v:repeat">repeat</a></code> x</code> is an infinite <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, with <code>x</code> the value of every
 element.</p></div></div><div class="top"><p class="src"><a id="v:replicate" class="def">replicate</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#replicate" class="link">Source</a> <a href="#v:replicate" class="selflink">#</a></p><div class="doc"><p><em>O(n*m)</em> <code><a href="Data-Text-Lazy.html#v:replicate">replicate</a></code> <code>n</code> <code>t</code> is a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> consisting of the input
 <code>t</code> repeated <code>n</code> times.</p></div></div><div class="top"><p class="src"><a id="v:cycle" class="def">cycle</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#cycle" class="link">Source</a> <a href="#v:cycle" class="selflink">#</a></p><div class="doc"><p><code><a href="Data-Text-Lazy.html#v:cycle">cycle</a></code> ties a finite, non-empty <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> into a circular one, or
 equivalently, the infinite repetition of the original <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>.</p></div></div><div class="top"><p class="src"><a id="v:iterate" class="def">iterate</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#iterate" class="link">Source</a> <a href="#v:iterate" class="selflink">#</a></p><div class="doc"><p><code><code><a href="Data-Text-Lazy.html#v:iterate">iterate</a></code> f x</code> returns an infinite <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> of repeated applications
 of <code>f</code> to <code>x</code>:</p><pre>iterate f x == [x, f x, f (f x), ...]</pre></div></div><div class="top"><p class="src"><a id="v:unfoldr" class="def">unfoldr</a> :: (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>, a)) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#unfoldr" class="link">Source</a> <a href="#v:unfoldr" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em>, where <code>n</code> is the length of the result. The <code><a href="Data-Text-Lazy.html#v:unfoldr">unfoldr</a></code>
 function is analogous to the List <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/GHC-OldList.html#v:unfoldr">unfoldr</a></code>. <code><a href="Data-Text-Lazy.html#v:unfoldr">unfoldr</a></code> builds a
 <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> from a seed value. The function takes the element and
 returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#v:Nothing">Nothing</a></code> if it is done producing the <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, otherwise
 <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#v:Just">Just</a></code> <code>(a,b)</code>.  In this case, <code>a</code> is the next <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></code> in the
 string, and <code>b</code> is the seed value for further production.  Performs
 replacement on invalid scalar values.</p></div></div><div class="top"><p class="src"><a id="v:unfoldrN" class="def">unfoldrN</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; (a -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>, a)) -&gt; a -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#unfoldrN" class="link">Source</a> <a href="#v:unfoldrN" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Like <code><a href="Data-Text-Lazy.html#v:unfoldr">unfoldr</a></code>, <code><a href="Data-Text-Lazy.html#v:unfoldrN">unfoldrN</a></code> builds a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> from a seed
 value. However, the length of the result should be limited by the
 first argument to <code><a href="Data-Text-Lazy.html#v:unfoldrN">unfoldrN</a></code>. This function is more efficient than
 <code><a href="Data-Text-Lazy.html#v:unfoldr">unfoldr</a></code> when the maximum length of the result is known and
 correct, otherwise its performance is similar to <code><a href="Data-Text-Lazy.html#v:unfoldr">unfoldr</a></code>.
 Performs replacement on invalid scalar values.</p></div></div><h1 id="g:15">Substrings</h1><h2 id="g:16">Breaking strings</h2><div class="top"><p class="src"><a id="v:take" class="def">take</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#take" class="link">Source</a> <a href="#v:take" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:take">take</a></code> <code>n</code>, applied to a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, returns the prefix of the
 <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> of length <code>n</code>, or the <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> itself if <code>n</code> is greater than
 the length of the Text. Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:takeEnd" class="def">takeEnd</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#takeEnd" class="link">Source</a> <a href="#v:takeEnd" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:takeEnd">takeEnd</a></code> <code>n</code> <code>t</code> returns the suffix remaining after
 taking <code>n</code> characters from the end of <code>t</code>.</p><p>Examples:</p><pre>takeEnd 3 &quot;foobar&quot; == &quot;bar&quot;</pre></div></div><div class="top"><p class="src"><a id="v:drop" class="def">drop</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#drop" class="link">Source</a> <a href="#v:drop" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:drop">drop</a></code> <code>n</code>, applied to a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, returns the suffix of the
 <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> after the first <code>n</code> characters, or the empty <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> if <code>n</code>
 is greater than the length of the <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>. Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:dropEnd" class="def">dropEnd</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#dropEnd" class="link">Source</a> <a href="#v:dropEnd" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:dropEnd">dropEnd</a></code> <code>n</code> <code>t</code> returns the prefix remaining after
 dropping <code>n</code> characters from the end of <code>t</code>.</p><p>Examples:</p><pre>dropEnd 3 &quot;foobar&quot; == &quot;foo&quot;</pre></div></div><div class="top"><p class="src"><a id="v:takeWhile" class="def">takeWhile</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#takeWhile" class="link">Source</a> <a href="#v:takeWhile" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:takeWhile">takeWhile</a></code>, applied to a predicate <code>p</code> and a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>,
 returns the longest prefix (possibly empty) of elements that
 satisfy <code>p</code>.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:takeWhileEnd" class="def">takeWhileEnd</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#takeWhileEnd" class="link">Source</a> <a href="#v:takeWhileEnd" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:takeWhileEnd">takeWhileEnd</a></code>, applied to a predicate <code>p</code> and a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>,
 returns the longest suffix (possibly empty) of elements that
 satisfy <code>p</code>.
 Examples:</p><pre>takeWhileEnd (=='o') &quot;foo&quot; == &quot;oo&quot;</pre></div></div><div class="top"><p class="src"><a id="v:dropWhile" class="def">dropWhile</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#dropWhile" class="link">Source</a> <a href="#v:dropWhile" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:dropWhile">dropWhile</a></code> <code>p</code> <code>t</code> returns the suffix remaining after
 <code><a href="Data-Text-Lazy.html#v:takeWhile">takeWhile</a></code> <code>p</code> <code>t</code>.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:dropWhileEnd" class="def">dropWhileEnd</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#dropWhileEnd" class="link">Source</a> <a href="#v:dropWhileEnd" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:dropWhileEnd">dropWhileEnd</a></code> <code>p</code> <code>t</code> returns the prefix remaining after
 dropping characters that satisfy the predicate <code>p</code> from the end of
 <code>t</code>.</p><p>Examples:</p><pre>dropWhileEnd (=='.') &quot;foo...&quot; == &quot;foo&quot;</pre></div></div><div class="top"><p class="src"><a id="v:dropAround" class="def">dropAround</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#dropAround" class="link">Source</a> <a href="#v:dropAround" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:dropAround">dropAround</a></code> <code>p</code> <code>t</code> returns the substring remaining after
 dropping characters that satisfy the predicate <code>p</code> from both the
 beginning and end of <code>t</code>.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:strip" class="def">strip</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#strip" class="link">Source</a> <a href="#v:strip" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Remove leading and trailing white space from a string.
 Equivalent to:</p><pre>dropAround isSpace</pre></div></div><div class="top"><p class="src"><a id="v:stripStart" class="def">stripStart</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#stripStart" class="link">Source</a> <a href="#v:stripStart" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Remove leading white space from a string.  Equivalent to:</p><pre>dropWhile isSpace</pre></div></div><div class="top"><p class="src"><a id="v:stripEnd" class="def">stripEnd</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#stripEnd" class="link">Source</a> <a href="#v:stripEnd" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Remove trailing white space from a string.  Equivalent to:</p><pre>dropWhileEnd isSpace</pre></div></div><div class="top"><p class="src"><a id="v:splitAt" class="def">splitAt</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="src/Data-Text-Lazy.html#splitAt" class="link">Source</a> <a href="#v:splitAt" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:splitAt">splitAt</a></code> <code>n t</code> returns a pair whose first element is a
 prefix of <code>t</code> of length <code>n</code>, and whose second is the remainder of
 the string. It is equivalent to <code>(<code><a href="Data-Text-Lazy.html#v:take">take</a></code> n t, <code><a href="Data-Text-Lazy.html#v:drop">drop</a></code> n t)</code>.</p></div></div><div class="top"><p class="src"><a id="v:span" class="def">span</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="src/Data-Text-Lazy.html#span" class="link">Source</a> <a href="#v:span" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:span">span</a></code>, applied to a predicate <code>p</code> and text <code>t</code>, returns
 a pair whose first element is the longest prefix (possibly empty)
 of <code>t</code> of elements that satisfy <code>p</code>, and whose second is the
 remainder of the list.</p></div></div><div class="top"><p class="src"><a id="v:breakOn" class="def">breakOn</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="src/Data-Text-Lazy.html#breakOn" class="link">Source</a> <a href="#v:breakOn" class="selflink">#</a></p><div class="doc"><p><em>O(n+m)</em> Find the first instance of <code>needle</code> (which must be
 non-<code><a href="Data-Text-Lazy.html#v:null">null</a></code>) in <code>haystack</code>.  The first element of the returned tuple
 is the prefix of <code>haystack</code> before <code>needle</code> is matched.  The second
 is the remainder of <code>haystack</code>, starting with the match.</p><p>Examples:</p><pre>breakOn &quot;::&quot; &quot;a::b::c&quot; ==&gt; (&quot;a&quot;, &quot;::b::c&quot;)
breakOn &quot;/&quot; &quot;foobar&quot;   ==&gt; (&quot;foobar&quot;, &quot;&quot;)</pre><p>Laws:</p><pre>append prefix match == haystack
  where (prefix, match) = breakOn needle haystack</pre><p>If you need to break a string by a substring repeatedly (e.g. you
 want to break on every instance of a substring), use <code><a href="Data-Text-Lazy.html#v:breakOnAll">breakOnAll</a></code>
 instead, as it has lower startup overhead.</p><p>This function is strict in its first argument, and lazy in its
 second.</p><p>In (unlikely) bad cases, this function's time complexity degrades
 towards <em>O(n*m)</em>.</p></div></div><div class="top"><p class="src"><a id="v:breakOnEnd" class="def">breakOnEnd</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="src/Data-Text-Lazy.html#breakOnEnd" class="link">Source</a> <a href="#v:breakOnEnd" class="selflink">#</a></p><div class="doc"><p><em>O(n+m)</em> Similar to <code><a href="Data-Text-Lazy.html#v:breakOn">breakOn</a></code>, but searches from the end of the string.</p><p>The first element of the returned tuple is the prefix of <code>haystack</code>
 up to and including the last match of <code>needle</code>.  The second is the
 remainder of <code>haystack</code>, following the match.</p><pre>breakOnEnd &quot;::&quot; &quot;a::b::c&quot; ==&gt; (&quot;a::b::&quot;, &quot;c&quot;)</pre></div></div><div class="top"><p class="src"><a id="v:break" class="def">break</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="src/Data-Text-Lazy.html#break" class="link">Source</a> <a href="#v:break" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:break">break</a></code> is like <code><a href="Data-Text-Lazy.html#v:span">span</a></code>, but the prefix returned is over
 elements that fail the predicate <code>p</code>.</p></div></div><div class="top"><p class="src"><a id="v:group" class="def">group</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="src/Data-Text-Lazy.html#group" class="link">Source</a> <a href="#v:group" class="selflink">#</a></p><div class="doc"><p>The <code><a href="Data-Text-Lazy.html#v:group">group</a></code> function takes a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> and returns a list of <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>s
 such that the concatenation of the result is equal to the argument.
 Moreover, each sublist in the result contains only equal elements.
 For example,</p><pre>group &quot;Mississippi&quot; = [&quot;M&quot;,&quot;i&quot;,&quot;ss&quot;,&quot;i&quot;,&quot;ss&quot;,&quot;i&quot;,&quot;pp&quot;,&quot;i&quot;]</pre><p>It is a special case of <code><a href="Data-Text-Lazy.html#v:groupBy">groupBy</a></code>, which allows the programmer to
 supply their own equality test.</p></div></div><div class="top"><p class="src"><a id="v:groupBy" class="def">groupBy</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="src/Data-Text-Lazy.html#groupBy" class="link">Source</a> <a href="#v:groupBy" class="selflink">#</a></p><div class="doc"><p>The <code><a href="Data-Text-Lazy.html#v:groupBy">groupBy</a></code> function is the non-overloaded version of <code><a href="Data-Text-Lazy.html#v:group">group</a></code>.</p></div></div><div class="top"><p class="src"><a id="v:inits" class="def">inits</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="src/Data-Text-Lazy.html#inits" class="link">Source</a> <a href="#v:inits" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Return all initial segments of the given <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>,
 shortest first.</p></div></div><div class="top"><p class="src"><a id="v:tails" class="def">tails</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="src/Data-Text-Lazy.html#tails" class="link">Source</a> <a href="#v:tails" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Return all final segments of the given <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, longest
 first.</p></div></div><h2 id="g:17">Breaking into many substrings</h2><div class="doc"><p>Splitting functions in this library do not perform character-wise
 copies to create substrings; they just construct new <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>s that
 are slices of the original.</p></div><div class="top"><p class="src"><a id="v:splitOn" class="def">splitOn</a> <a href="src/Data-Text-Lazy.html#splitOn" class="link">Source</a> <a href="#v:splitOn" class="selflink">#</a></p><div class="subs arguments"><p class="caption">Arguments</p><table><tr><td class="src">:: <a href="Data-Text-Lazy.html#t:Text">Text</a></td><td class="doc"><p>String to split on. If this string is empty, an error
 will occur.</p></td></tr><tr><td class="src">-&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></td><td class="doc"><p>Input text.</p></td></tr><tr><td class="src">-&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>]</td><td class="doc empty">&nbsp;</td></tr></table></div><div class="doc"><p><em>O(m+n)</em> Break a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> into pieces separated by the first <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>
 argument (which cannot be an empty string), consuming the
 delimiter. An empty delimiter is invalid, and will cause an error
 to be raised.</p><p>Examples:</p><pre>splitOn &quot;\r\n&quot; &quot;a\r\nb\r\nd\r\ne&quot; == [&quot;a&quot;,&quot;b&quot;,&quot;d&quot;,&quot;e&quot;]
splitOn &quot;aaa&quot;  &quot;aaaXaaaXaaaXaaa&quot;  == [&quot;&quot;,&quot;X&quot;,&quot;X&quot;,&quot;X&quot;,&quot;&quot;]
splitOn &quot;x&quot;    &quot;x&quot;                == [&quot;&quot;,&quot;&quot;]</pre><p>and</p><pre>intercalate s . splitOn s         == id
splitOn (singleton c)             == split (==c)</pre><p>(Note: the string <code>s</code> to split on above cannot be empty.)</p><p>This function is strict in its first argument, and lazy in its
 second.</p><p>In (unlikely) bad cases, this function's time complexity degrades
 towards <em>O(n*m)</em>.</p></div></div><div class="top"><p class="src"><a id="v:split" class="def">split</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="src/Data-Text-Lazy.html#split" class="link">Source</a> <a href="#v:split" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Splits a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> into components delimited by separators,
 where the predicate returns True for a separator element.  The
 resulting components do not contain the separators.  Two adjacent
 separators result in an empty component in the output.  eg.</p><pre>split (=='a') &quot;aabbaca&quot; == [&quot;&quot;,&quot;&quot;,&quot;bb&quot;,&quot;c&quot;,&quot;&quot;]
split (=='a') []        == [&quot;&quot;]</pre></div></div><div class="top"><p class="src"><a id="v:chunksOf" class="def">chunksOf</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="src/Data-Text-Lazy.html#chunksOf" class="link">Source</a> <a href="#v:chunksOf" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Splits a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> into components of length <code>k</code>.  The last
 element may be shorter than the other chunks, depending on the
 length of the input. Examples:</p><pre>chunksOf 3 &quot;foobarbaz&quot;   == [&quot;foo&quot;,&quot;bar&quot;,&quot;baz&quot;]
chunksOf 4 &quot;haskell.org&quot; == [&quot;hask&quot;,&quot;ell.&quot;,&quot;org&quot;]</pre></div></div><h2 id="g:18">Breaking into lines and words</h2><div class="top"><p class="src"><a id="v:lines" class="def">lines</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="src/Data-Text-Lazy.html#lines" class="link">Source</a> <a href="#v:lines" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Breaks a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> up into a list of <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>s at
 newline <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></code>s. The resulting strings do not contain newlines.</p></div></div><div class="top"><p class="src"><a id="v:words" class="def">words</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="src/Data-Text-Lazy.html#words" class="link">Source</a> <a href="#v:words" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Breaks a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> up into a list of words, delimited by <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a></code>s
 representing white space.</p></div></div><div class="top"><p class="src"><a id="v:unlines" class="def">unlines</a> :: [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#unlines" class="link">Source</a> <a href="#v:unlines" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Joins lines, after appending a terminating newline to
 each.</p></div></div><div class="top"><p class="src"><a id="v:unwords" class="def">unwords</a> :: [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#unwords" class="link">Source</a> <a href="#v:unwords" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Joins words using single space characters.</p></div></div><h1 id="g:19">Predicates</h1><div class="top"><p class="src"><a id="v:isPrefixOf" class="def">isPrefixOf</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Text-Lazy.html#isPrefixOf" class="link">Source</a> <a href="#v:isPrefixOf" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> The <code><a href="Data-Text-Lazy.html#v:isPrefixOf">isPrefixOf</a></code> function takes two <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>s and returns
 <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#v:True">True</a></code> iff the first is a prefix of the second.  Subject to fusion.</p></div></div><div class="top"><p class="src"><a id="v:isSuffixOf" class="def">isSuffixOf</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Text-Lazy.html#isSuffixOf" class="link">Source</a> <a href="#v:isSuffixOf" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> The <code><a href="Data-Text-Lazy.html#v:isSuffixOf">isSuffixOf</a></code> function takes two <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>s and returns
 <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#v:True">True</a></code> iff the first is a suffix of the second.</p></div></div><div class="top"><p class="src"><a id="v:isInfixOf" class="def">isInfixOf</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="src/Data-Text-Lazy.html#isInfixOf" class="link">Source</a> <a href="#v:isInfixOf" class="selflink">#</a></p><div class="doc"><p><em>O(n+m)</em> The <code><a href="Data-Text-Lazy.html#v:isInfixOf">isInfixOf</a></code> function takes two <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>s and returns
 <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#v:True">True</a></code> iff the first is contained, wholly and intact, anywhere
 within the second.</p><p>This function is strict in its first argument, and lazy in its
 second.</p><p>In (unlikely) bad cases, this function's time complexity degrades
 towards <em>O(n*m)</em>.</p></div></div><h2 id="g:20">View patterns</h2><div class="top"><p class="src"><a id="v:stripPrefix" class="def">stripPrefix</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#stripPrefix" class="link">Source</a> <a href="#v:stripPrefix" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Return the suffix of the second string if its prefix
 matches the entire first string.</p><p>Examples:</p><pre>stripPrefix &quot;foo&quot; &quot;foobar&quot; == Just &quot;bar&quot;
stripPrefix &quot;&quot;    &quot;baz&quot;    == Just &quot;baz&quot;
stripPrefix &quot;foo&quot; &quot;quux&quot;   == Nothing</pre><p>This is particularly useful with the <code>ViewPatterns</code> extension to
 GHC, as follows:</p><pre>{-# LANGUAGE ViewPatterns #-}
import Data.Text.Lazy as T

fnordLength :: Text -&gt; Int
fnordLength (stripPrefix &quot;fnord&quot; -&gt; Just suf) = T.length suf
fnordLength _                                 = -1</pre></div></div><div class="top"><p class="src"><a id="v:stripSuffix" class="def">stripSuffix</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#stripSuffix" class="link">Source</a> <a href="#v:stripSuffix" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Return the prefix of the second string if its suffix
 matches the entire first string.</p><p>Examples:</p><pre>stripSuffix &quot;bar&quot; &quot;foobar&quot; == Just &quot;foo&quot;
stripSuffix &quot;&quot;    &quot;baz&quot;    == Just &quot;baz&quot;
stripSuffix &quot;foo&quot; &quot;quux&quot;   == Nothing</pre><p>This is particularly useful with the <code>ViewPatterns</code> extension to
 GHC, as follows:</p><pre>{-# LANGUAGE ViewPatterns #-}
import Data.Text.Lazy as T

quuxLength :: Text -&gt; Int
quuxLength (stripSuffix &quot;quux&quot; -&gt; Just pre) = T.length pre
quuxLength _                                = -1</pre></div></div><div class="top"><p class="src"><a id="v:commonPrefixes" class="def">commonPrefixes</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="src/Data-Text-Lazy.html#commonPrefixes" class="link">Source</a> <a href="#v:commonPrefixes" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> Find the longest non-empty common prefix of two strings
 and return it, along with the suffixes of each string at which they
 no longer match.</p><p>If the strings do not have a common prefix or either one is empty,
 this function returns <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#v:Nothing">Nothing</a></code>.</p><p>Examples:</p><pre>commonPrefixes &quot;foobar&quot; &quot;fooquux&quot; == Just (&quot;foo&quot;,&quot;bar&quot;,&quot;quux&quot;)
commonPrefixes &quot;veeble&quot; &quot;fetzer&quot;  == Nothing
commonPrefixes &quot;&quot; &quot;baz&quot;           == Nothing</pre></div></div><h1 id="g:21">Searching</h1><div class="top"><p class="src"><a id="v:filter" class="def">filter</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#filter" class="link">Source</a> <a href="#v:filter" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:filter">filter</a></code>, applied to a predicate and a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>,
 returns a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> containing those characters that satisfy the
 predicate.</p></div></div><div class="top"><p class="src"><a id="v:find" class="def">find</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Text-Lazy.html#find" class="link">Source</a> <a href="#v:find" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> The <code><a href="Data-Text-Lazy.html#v:find">find</a></code> function takes a predicate and a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>, and
 returns the first element in matching the predicate, or <code><a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#v:Nothing">Nothing</a></code>
 if there is no such element.</p></div></div><div class="top"><p class="src"><a id="v:breakOnAll" class="def">breakOnAll</a> <a href="src/Data-Text-Lazy.html#breakOnAll" class="link">Source</a> <a href="#v:breakOnAll" class="selflink">#</a></p><div class="subs arguments"><p class="caption">Arguments</p><table><tr><td class="src">:: <a href="Data-Text-Lazy.html#t:Text">Text</a></td><td class="doc"><p><code>needle</code> to search for</p></td></tr><tr><td class="src">-&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a></td><td class="doc"><p><code>haystack</code> in which to search</p></td></tr><tr><td class="src">-&gt; [(<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>)]</td><td class="doc empty">&nbsp;</td></tr></table></div><div class="doc"><p><em>O(n+m)</em> Find all non-overlapping instances of <code>needle</code> in
 <code>haystack</code>.  Each element of the returned list consists of a pair:</p><ul><li>The entire string prior to the <em>k</em>th match (i.e. the prefix)</li><li>The <em>k</em>th match, followed by the remainder of the string</li></ul><p>Examples:</p><pre>breakOnAll &quot;::&quot; &quot;&quot;
==&gt; []
breakOnAll &quot;/&quot; &quot;a/b/c/&quot;
==&gt; [(&quot;a&quot;, &quot;/b/c/&quot;), (&quot;a/b&quot;, &quot;/c/&quot;), (&quot;a/b/c&quot;, &quot;/&quot;)]</pre><p>This function is strict in its first argument, and lazy in its
 second.</p><p>In (unlikely) bad cases, this function's time complexity degrades
 towards <em>O(n*m)</em>.</p><p>The <code>needle</code> parameter may not be empty.</p></div></div><div class="top"><p class="src"><a id="v:partition" class="def">partition</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; (<a href="Data-Text-Lazy.html#t:Text">Text</a>, <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="src/Data-Text-Lazy.html#partition" class="link">Source</a> <a href="#v:partition" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> The <code><a href="Data-Text-Lazy.html#v:partition">partition</a></code> function takes a predicate and a <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>,
 and returns the pair of <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>s with elements which do and do not
 satisfy the predicate, respectively; i.e.</p><pre>partition p t == (filter p t, filter (not . p) t)</pre></div></div><h1 id="g:22">Indexing</h1><div class="top"><p class="src"><a id="v:index" class="def">index</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> <a href="src/Data-Text-Lazy.html#index" class="link">Source</a> <a href="#v:index" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> index (subscript) operator, starting from 0.</p></div></div><div class="top"><p class="src"><a id="v:count" class="def">count</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int64">Int64</a> <a href="src/Data-Text-Lazy.html#count" class="link">Source</a> <a href="#v:count" class="selflink">#</a></p><div class="doc"><p><em>O(n+m)</em> The <code><a href="Data-Text-Lazy.html#v:count">count</a></code> function returns the number of times the
 query string appears in the given <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>. An empty query string is
 invalid, and will cause an error to be raised.</p><p>In (unlikely) bad cases, this function's time complexity degrades
 towards <em>O(n*m)</em>.</p></div></div><h1 id="g:23">Zipping and unzipping</h1><div class="top"><p class="src"><a id="v:zip" class="def">zip</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [(<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>)] <a href="src/Data-Text-Lazy.html#zip" class="link">Source</a> <a href="#v:zip" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:zip">zip</a></code> takes two <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code>s and returns a list of
 corresponding pairs of bytes. If one input <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> is short,
 excess elements of the longer <code><a href="Data-Text-Lazy.html#t:Text">Text</a></code> are discarded. This is
 equivalent to a pair of <code><a href="Data-Text-Lazy.html#v:unpack">unpack</a></code> operations.</p></div></div><div class="top"><p class="src"><a id="v:zipWith" class="def">zipWith</a> :: (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Char.html#t:Char">Char</a>) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="src/Data-Text-Lazy.html#zipWith" class="link">Source</a> <a href="#v:zipWith" class="selflink">#</a></p><div class="doc"><p><em>O(n)</em> <code><a href="Data-Text-Lazy.html#v:zipWith">zipWith</a></code> generalises <code><a href="Data-Text-Lazy.html#v:zip">zip</a></code> by zipping with the function
 given as the first argument, instead of a tupling function.
 Performs replacement on invalid scalar values.</p></div></div><h1>Orphan instances</h1><div id="section.orphans" class="show"><table><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:IsList:IsList:1" class="instance expander" onclick="toggleSection('i:o:ic:IsList:IsList:1')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/GHC-Exts.html#t:IsList">IsList</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-365" class="link">Source</a> <a href="#v:-36-fIsListText" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:o:ic:IsList:IsList:1" class="inst-details hide"><div class="subs associated-types"><p class="caption">Associated Types</p><p class="src"><span class="keyword">type</span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/GHC-Exts.html#t:Item">Item</a> <a href="Data-Text-Lazy.html#t:Text">Text</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Kind.html#t:-42-">*</a> <a href="#t:Item" class="selflink">#</a></p></div> <div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:fromList">fromList</a> :: [<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/GHC-Exts.html#t:Item">Item</a> <a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:fromList" class="selflink">#</a></p><p class="src"><a href="#v:fromListN">fromListN</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int">Int</a> -&gt; [<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/GHC-Exts.html#t:Item">Item</a> <a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:fromListN" class="selflink">#</a></p><p class="src"><a href="#v:toList">toList</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/GHC-Exts.html#t:Item">Item</a> <a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="#v:toList" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:Eq:Eq:2" class="instance expander" onclick="toggleSection('i:o:ic:Eq:Eq:2')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Eq.html#t:Eq">Eq</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-314" class="link">Source</a> <a href="#v:-36-fEqText" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:o:ic:Eq:Eq:2" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:-61--61-">(==)</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-61--61-" class="selflink">#</a></p><p class="src"><a href="#v:-47--61-">(/=)</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-47--61-" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:Data:Data:3" class="instance expander" onclick="toggleSection('i:o:ic:Data:Data:3')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-390" class="link">Source</a> <a href="#v:-36-fDataText" class="selflink">#</a></td><td class="doc"><p>This instance preserves data abstraction at the cost of inefficiency.
 We omit reflection services for the sake of data abstraction.</p><p>This instance was created by copying the updated behavior of
 <code><a href="Data-Text.html">Data.Text</a>.</code><code><a href="Data-Text.html#v:Text">Text</a></code></p></td></tr><tr><td colspan="2"><div id="section.i:o:ic:Data:Data:3" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:gfoldl">gfoldl</a> :: (<span class="keyword">forall</span> d b. <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> d =&gt; c (d -&gt; b) -&gt; d -&gt; c b) -&gt; (<span class="keyword">forall</span> g. g -&gt; c g) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; c <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:gfoldl" class="selflink">#</a></p><p class="src"><a href="#v:gunfold">gunfold</a> :: (<span class="keyword">forall</span> b r. <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> b =&gt; c (b -&gt; r) -&gt; c r) -&gt; (<span class="keyword">forall</span> r. r -&gt; c r) -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Constr">Constr</a> -&gt; c <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:gunfold" class="selflink">#</a></p><p class="src"><a href="#v:toConstr">toConstr</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Constr">Constr</a> <a href="#v:toConstr" class="selflink">#</a></p><p class="src"><a href="#v:dataTypeOf">dataTypeOf</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:DataType">DataType</a> <a href="#v:dataTypeOf" class="selflink">#</a></p><p class="src"><a href="#v:dataCast1">dataCast1</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Typeable-Internal.html#t:Typeable">Typeable</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Kind.html#t:-42-">*</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Kind.html#t:-42-">*</a>) t =&gt; (<span class="keyword">forall</span> d. <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> d =&gt; c (t d)) -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> (c <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="#v:dataCast1" class="selflink">#</a></p><p class="src"><a href="#v:dataCast2">dataCast2</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Typeable-Internal.html#t:Typeable">Typeable</a> (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Kind.html#t:-42-">*</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Kind.html#t:-42-">*</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Kind.html#t:-42-">*</a>) t =&gt; (<span class="keyword">forall</span> d e. (<a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> d, <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> e) =&gt; c (t d e)) -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Maybe.html#t:Maybe">Maybe</a> (c <a href="Data-Text-Lazy.html#t:Text">Text</a>) <a href="#v:dataCast2" class="selflink">#</a></p><p class="src"><a href="#v:gmapT">gmapT</a> :: (<span class="keyword">forall</span> b. <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> b =&gt; b -&gt; b) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:gmapT" class="selflink">#</a></p><p class="src"><a href="#v:gmapQl">gmapQl</a> :: (r -&gt; r' -&gt; r) -&gt; r -&gt; (<span class="keyword">forall</span> d. <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> d =&gt; d -&gt; r') -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; r <a href="#v:gmapQl" class="selflink">#</a></p><p class="src"><a href="#v:gmapQr">gmapQr</a> :: (r' -&gt; r -&gt; r) -&gt; r -&gt; (<span class="keyword">forall</span> d. <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> d =&gt; d -&gt; r') -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; r <a href="#v:gmapQr" class="selflink">#</a></p><p class="src"><a href="#v:gmapQ">gmapQ</a> :: (<span class="keyword">forall</span> d. <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> d =&gt; d -&gt; u) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; [u] <a href="#v:gmapQ" class="selflink">#</a></p><p class="src"><a href="#v:gmapQi">gmapQi</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int">Int</a> -&gt; (<span class="keyword">forall</span> d. <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> d =&gt; d -&gt; u) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; u <a href="#v:gmapQi" class="selflink">#</a></p><p class="src"><a href="#v:gmapM">gmapM</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Control-Monad.html#t:Monad">Monad</a> m =&gt; (<span class="keyword">forall</span> d. <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> d =&gt; d -&gt; m d) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; m <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:gmapM" class="selflink">#</a></p><p class="src"><a href="#v:gmapMp">gmapMp</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m =&gt; (<span class="keyword">forall</span> d. <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> d =&gt; d -&gt; m d) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; m <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:gmapMp" class="selflink">#</a></p><p class="src"><a href="#v:gmapMo">gmapMo</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Control-Monad.html#t:MonadPlus">MonadPlus</a> m =&gt; (<span class="keyword">forall</span> d. <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Data.html#t:Data">Data</a> d =&gt; d -&gt; m d) -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; m <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:gmapMo" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:Ord:Ord:4" class="instance expander" onclick="toggleSection('i:o:ic:Ord:Ord:4')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Ord.html#t:Ord">Ord</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-318" class="link">Source</a> <a href="#v:-36-fOrdText" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:o:ic:Ord:Ord:4" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:compare">compare</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Ord.html#t:Ordering">Ordering</a> <a href="#v:compare" class="selflink">#</a></p><p class="src"><a href="#v:-60-">(&lt;)</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-60-" class="selflink">#</a></p><p class="src"><a href="#v:-60--61-">(&lt;=)</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-60--61-" class="selflink">#</a></p><p class="src"><a href="#v:-62-">(&gt;)</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-62-" class="selflink">#</a></p><p class="src"><a href="#v:-62--61-">(&gt;=)</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Bool.html#t:Bool">Bool</a> <a href="#v:-62--61-" class="selflink">#</a></p><p class="src"><a href="#v:max">max</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:max" class="selflink">#</a></p><p class="src"><a href="#v:min">min</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:min" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:Read:Read:5" class="instance expander" onclick="toggleSection('i:o:ic:Read:Read:5')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Read.html#t:Read">Read</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-341" class="link">Source</a> <a href="#v:-36-fReadText" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:o:ic:Read:Read:5" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:readsPrec">readsPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int">Int</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadP.html#t:ReadS">ReadS</a> <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:readsPrec" class="selflink">#</a></p><p class="src"><a href="#v:readList">readList</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadP.html#t:ReadS">ReadS</a> [<a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="#v:readList" class="selflink">#</a></p><p class="src"><a href="#v:readPrec">readPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadPrec.html#t:ReadPrec">ReadPrec</a> <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:readPrec" class="selflink">#</a></p><p class="src"><a href="#v:readListPrec">readListPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-ParserCombinators-ReadPrec.html#t:ReadPrec">ReadPrec</a> [<a href="Data-Text-Lazy.html#t:Text">Text</a>] <a href="#v:readListPrec" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:Show:Show:6" class="instance expander" onclick="toggleSection('i:o:ic:Show:Show:6')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:Show">Show</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-338" class="link">Source</a> <a href="#v:-36-fShowText" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:o:ic:Show:Show:6" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:showsPrec">showsPrec</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Int.html#t:Int">Int</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:ShowS">ShowS</a> <a href="#v:showsPrec" class="selflink">#</a></p><p class="src"><a href="#v:show">show</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:String">String</a> <a href="#v:show" class="selflink">#</a></p><p class="src"><a href="#v:showList">showList</a> :: [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Show.html#t:ShowS">ShowS</a> <a href="#v:showList" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:IsString:IsString:7" class="instance expander" onclick="toggleSection('i:o:ic:IsString:IsString:7')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:IsString">IsString</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-361" class="link">Source</a> <a href="#v:-36-fIsStringText" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:o:ic:IsString:IsString:7" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:fromString">fromString</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-String.html#t:String">String</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:fromString" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:Semigroup:Semigroup:8" class="instance expander" onclick="toggleSection('i:o:ic:Semigroup:Semigroup:8')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Semigroup.html#t:Semigroup">Semigroup</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-348" class="link">Source</a> <a href="#v:-36-fSemigroupText" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:o:ic:Semigroup:Semigroup:8" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:-60--62-">(&lt;&gt;)</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:-60--62-" class="selflink">#</a></p><p class="src"><a href="#v:sconcat">sconcat</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-List-NonEmpty.html#t:NonEmpty">NonEmpty</a> <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:sconcat" class="selflink">#</a></p><p class="src"><a href="#v:stimes">stimes</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Prelude.html#t:Integral">Integral</a> b =&gt; b -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:stimes" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:Monoid:Monoid:9" class="instance expander" onclick="toggleSection('i:o:ic:Monoid:Monoid:9')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Data-Monoid.html#t:Monoid">Monoid</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-352" class="link">Source</a> <a href="#v:-36-fMonoidText" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:o:ic:Monoid:Monoid:9" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:mempty">mempty</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:mempty" class="selflink">#</a></p><p class="src"><a href="#v:mappend">mappend</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:mappend" class="selflink">#</a></p><p class="src"><a href="#v:mconcat">mconcat</a> :: [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:mconcat" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:PrintfArg:PrintfArg:10" class="instance expander" onclick="toggleSection('i:o:ic:PrintfArg:PrintfArg:10')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Printf.html#t:PrintfArg">PrintfArg</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-400" class="link">Source</a> <a href="#v:-36-fPrintfArgText" class="selflink">#</a></td><td class="doc"><p>Only defined for <code>base-4.7.0.0</code> and later</p></td></tr><tr><td colspan="2"><div id="section.i:o:ic:PrintfArg:PrintfArg:10" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:formatArg">formatArg</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Printf.html#t:FieldFormatter">FieldFormatter</a> <a href="#v:formatArg" class="selflink">#</a></p><p class="src"><a href="#v:parseFormat">parseFormat</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/base-4.9.0.0/Text-Printf.html#t:ModifierParser">ModifierParser</a> <a href="#v:parseFormat" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:Binary:Binary:11" class="instance expander" onclick="toggleSection('i:o:ic:Binary:Binary:11')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/binary-0.8.3.0/Data-Binary.html#t:Binary">Binary</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-377" class="link">Source</a> <a href="#v:-36-fBinaryText" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:o:ic:Binary:Binary:11" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:put">put</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/binary-0.8.3.0/Data-Binary-Put.html#t:Put">Put</a> <a href="#v:put" class="selflink">#</a></p><p class="src"><a href="#v:get">get</a> :: <a href="file:///usr/share/doc/ghc-doc/html/libraries/binary-0.8.3.0/Data-Binary-Get-Internal.html#t:Get">Get</a> <a href="Data-Text-Lazy.html#t:Text">Text</a> <a href="#v:get" class="selflink">#</a></p><p class="src"><a href="#v:putList">putList</a> :: [<a href="Data-Text-Lazy.html#t:Text">Text</a>] -&gt; <a href="file:///usr/share/doc/ghc-doc/html/libraries/binary-0.8.3.0/Data-Binary-Put.html#t:Put">Put</a> <a href="#v:putList" class="selflink">#</a></p></div></div></td></tr><tr><td class="src clearfix"><span class="inst-left"><span id="control.i:o:ic:NFData:NFData:12" class="instance expander" onclick="toggleSection('i:o:ic:NFData:NFData:12')"></span> <a href="file:///usr/share/doc/ghc-doc/html/libraries/deepseq-1.4.2.0/Control-DeepSeq.html#t:NFData">NFData</a> <a href="Data-Text-Lazy.html#t:Text">Text</a></span> <a href="src/Data-Text-Lazy.html#line-372" class="link">Source</a> <a href="#v:-36-fNFDataText" class="selflink">#</a></td><td class="doc empty">&nbsp;</td></tr><tr><td colspan="2"><div id="section.i:o:ic:NFData:NFData:12" class="inst-details hide"><div class="subs methods"><p class="caption">Methods</p><p class="src"><a href="#v:rnf">rnf</a> :: <a href="Data-Text-Lazy.html#t:Text">Text</a> -&gt; () <a href="#v:rnf" class="selflink">#</a></p></div></div></td></tr></table></div></div></div><div id="footer"><p>Produced by <a href="http://www.haskell.org/haddock/">Haddock</a> version 2.17.2</p></div></body></html>