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<title>Control/Monad/RWS/Strict.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module      :  Control.Monad.RWS.Strict</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright   :  (c) Andy Gill 2001,</span>
<a name="line-5"></a><span class='hs-comment'>--                (c) Oregon Graduate Institute of Science and Technology, 2001</span>
<a name="line-6"></a><span class='hs-comment'>-- License     :  BSD-style (see the file LICENSE)</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Maintainer  :  libraries@haskell.org</span>
<a name="line-9"></a><span class='hs-comment'>-- Stability   :  experimental</span>
<a name="line-10"></a><span class='hs-comment'>-- Portability :  non-portable (multi-param classes, functional dependencies)</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- Strict RWS monad.</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>--      Inspired by the paper</span>
<a name="line-15"></a><span class='hs-comment'>--      /Functional Programming with Overloading and Higher-Order Polymorphism/,</span>
<a name="line-16"></a><span class='hs-comment'>--        Mark P Jones (&lt;<a href="http://web.cecs.pdx.edu/~mpj/">http://web.cecs.pdx.edu/~mpj/</a>&gt;)</span>
<a name="line-17"></a><span class='hs-comment'>--          Advanced School of Functional Programming, 1995.</span>
<a name="line-18"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-19"></a>
<a name="line-20"></a><span class='hs-keyword'>module</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'>RWS</span><span class='hs-varop'>.</span><span class='hs-conid'>Strict</span> <span class='hs-layout'>(</span>
<a name="line-21"></a>    <span class='hs-comment'>-- * The RWS monad</span>
<a name="line-22"></a>    <span class='hs-conid'>RWS</span><span class='hs-layout'>,</span>
<a name="line-23"></a>    <span class='hs-varid'>rws</span><span class='hs-layout'>,</span>
<a name="line-24"></a>    <span class='hs-varid'>runRWS</span><span class='hs-layout'>,</span>
<a name="line-25"></a>    <span class='hs-varid'>evalRWS</span><span class='hs-layout'>,</span>
<a name="line-26"></a>    <span class='hs-varid'>execRWS</span><span class='hs-layout'>,</span>
<a name="line-27"></a>    <span class='hs-varid'>mapRWS</span><span class='hs-layout'>,</span>
<a name="line-28"></a>    <span class='hs-varid'>withRWS</span><span class='hs-layout'>,</span>
<a name="line-29"></a>    <span class='hs-comment'>-- * The RWST monad transformer</span>
<a name="line-30"></a>    <span class='hs-conid'>RWST</span><span class='hs-layout'>(</span><span class='hs-conid'>RWST</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-31"></a>    <span class='hs-varid'>runRWST</span><span class='hs-layout'>,</span>
<a name="line-32"></a>    <span class='hs-varid'>evalRWST</span><span class='hs-layout'>,</span>
<a name="line-33"></a>    <span class='hs-varid'>execRWST</span><span class='hs-layout'>,</span>
<a name="line-34"></a>    <span class='hs-varid'>mapRWST</span><span class='hs-layout'>,</span>
<a name="line-35"></a>    <span class='hs-varid'>withRWST</span><span class='hs-layout'>,</span>
<a name="line-36"></a>    <span class='hs-comment'>-- * Strict Reader-writer-state monads</span>
<a name="line-37"></a>    <span class='hs-keyword'>module</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'>RWS</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span><span class='hs-layout'>,</span>
<a name="line-38"></a>    <span class='hs-keyword'>module</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span><span class='hs-layout'>,</span>
<a name="line-39"></a>    <span class='hs-keyword'>module</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'>Fix</span><span class='hs-layout'>,</span>
<a name="line-40"></a>    <span class='hs-keyword'>module</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-layout'>,</span>
<a name="line-41"></a>    <span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span><span class='hs-layout'>,</span>
<a name="line-42"></a>  <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-43"></a>
<a name="line-44"></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'>RWS</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span>
<a name="line-45"></a>
<a name="line-46"></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>
<a name="line-47"></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'>RWS</span><span class='hs-varop'>.</span><span class='hs-conid'>Strict</span> <span class='hs-layout'>(</span>
<a name="line-48"></a>    <span class='hs-conid'>RWS</span><span class='hs-layout'>,</span> <span class='hs-varid'>rws</span><span class='hs-layout'>,</span> <span class='hs-varid'>runRWS</span><span class='hs-layout'>,</span> <span class='hs-varid'>evalRWS</span><span class='hs-layout'>,</span> <span class='hs-varid'>execRWS</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapRWS</span><span class='hs-layout'>,</span> <span class='hs-varid'>withRWS</span><span class='hs-layout'>,</span>
<a name="line-49"></a>    <span class='hs-conid'>RWST</span><span class='hs-layout'>(</span><span class='hs-conid'>RWST</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>runRWST</span><span class='hs-layout'>,</span> <span class='hs-varid'>evalRWST</span><span class='hs-layout'>,</span> <span class='hs-varid'>execRWST</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapRWST</span><span class='hs-layout'>,</span> <span class='hs-varid'>withRWST</span><span class='hs-layout'>)</span>
<a name="line-50"></a>
<a name="line-51"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span>
<a name="line-52"></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'>Fix</span>
<a name="line-53"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span>
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