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<title>src/Data/Traversable/Instances.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-cpp'>#ifndef MIN_VERSION_transformers</span>
<a name="line-3"></a><span class='hs-cpp'>#define MIN_VERSION_transformers(x,y,z) 1</span>
<a name="line-4"></a><span class='hs-cpp'>#endif</span>
<a name="line-5"></a><span class='hs-cpp'>#ifndef MIN_VERSION_base</span>
<a name="line-6"></a><span class='hs-cpp'>#define MIN_VERSION_base(x,y,z) 1</span>
<a name="line-7"></a><span class='hs-cpp'>#endif</span>
<a name="line-8"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-9"></a><span class='hs-comment'>-- |</span>
<a name="line-10"></a><span class='hs-comment'>-- Copyright : (C) 2011-2015 Edward Kmett</span>
<a name="line-11"></a><span class='hs-comment'>-- License : BSD-style (see the file LICENSE)</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-- Maintainer : Edward Kmett <ekmett@gmail.com></span>
<a name="line-14"></a><span class='hs-comment'>-- Stability : provisional</span>
<a name="line-15"></a><span class='hs-comment'>-- Portability : polykinds</span>
<a name="line-16"></a><span class='hs-comment'>--</span>
<a name="line-17"></a><span class='hs-comment'>-- Placeholders for missing instances of 'Traversable', and 'Foldable' until</span>
<a name="line-18"></a><span class='hs-comment'>-- base catches up and adds them. Many of these are re-exports from the</span>
<a name="line-19"></a><span class='hs-comment'>-- `base-orphans` package.</span>
<a name="line-20"></a><span class='hs-comment'>----------------------------------------------------------------------------</span>
<a name="line-21"></a>
<a name="line-22"></a><span class='hs-comment'>{-# OPTIONS_GHC -fno-warn-orphans #-}</span>
<a name="line-23"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversable</span><span class='hs-varop'>.</span><span class='hs-conid'>Instances</span> <span class='hs-keyword'>where</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Orphans</span> <span class='hs-conid'>()</span>
<a name="line-26"></a>
<a name="line-27"></a><span class='hs-cpp'>#if !(MIN_VERSION_transformers(0,3,0))</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-varop'>.</span><span class='hs-conid'>Trans</span><span class='hs-varop'>.</span><span class='hs-conid'>Identity</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Foldable</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Traversable</span>
<a name="line-31"></a>
<a name="line-32"></a><a name="instance%20Foldable%20(IdentityT%20m)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Foldable</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Foldable</span> <span class='hs-layout'>(</span><span class='hs-conid'>IdentityT</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-33"></a> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldMap</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>runIdentityT</span>
<a name="line-34"></a>
<a name="line-35"></a><a name="instance%20Traversable%20(IdentityT%20m)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Traversable</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Traversable</span> <span class='hs-layout'>(</span><span class='hs-conid'>IdentityT</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-36"></a> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fmap</span> <span class='hs-conid'>IdentityT</span> <span class='hs-varop'>.</span> <span class='hs-varid'>traverse</span> <span class='hs-varid'>f</span> <span class='hs-varop'>.</span> <span class='hs-varid'>runIdentityT</span>
<a name="line-37"></a><span class='hs-cpp'>#endif</span>
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