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<h3>
 Marge Bot pushed to branch master
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7c555b054bf074a9ab612f9d93e3475bfb8c6594">7c555b05</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-05-30T06:08:43-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Optimize GHC.Utils.Monad.

Many functions in this module are recursive and as such are marked
loop breakers. Which means they are unlikely to get an unfolding.

This is *bad*. We always want to specialize them to specific Monads.
Which requires a visible unfolding at the use site.

I rewrote the recursive ones from:

    foo f x = ... foo x' ...

to

    foo f x = go x
      where
        go x = ...

As well as giving some pragmas to make all of them available
for specialization.

The end result is a reduction of allocations of about -1.4% for
nofib/spectral/simple/Main.hs when compiled with `-O`.

-------------------------
Metric Decrease:
    T12425
    T14683
    T5631
    T9233
    T9675
    T9961
    WWRec
-------------------------
</pre>
</li>
</ul>
<h4>1 changed file:</h4>
<ul>
<li class="file-stats">
<a href="#cb4ad425e8ed846dfcc5d3793b08b95f6864e545">
compiler/GHC/Utils/Monad.hs
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</li>
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<h4>Changes:</h4>
<li id="cb4ad425e8ed846dfcc5d3793b08b95f6864e545">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7c555b054bf074a9ab612f9d93e3475bfb8c6594#cb4ad425e8ed846dfcc5d3793b08b95f6864e545"><strong>compiler/GHC/Utils/Monad.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="138" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="138" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -138,22 +138,31 @@ mapAndUnzip5M :: Monad m => (a -> m (b,c,d,e,f)) -> [a] -> m ([b],[c],[d],[e],[f</td>
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<pre style="margin: 0;"> <span id="LC138" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Inline @mapAndUnzipNM@ functions] above.</span></span>
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<pre style="margin: 0;"> <span id="LC139" class="line" lang="haskell"><span class="n" style="color: #333;">mapAndUnzip5M</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">xs</span> <span class="o" style="font-weight: 600;">=</span>  <span class="n" style="color: #333;">unzip5</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">traverse</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">xs</span></span>
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<pre style="margin: 0;"> <span id="LC140" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC141" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO: mapAccumLM is used in many places. Surely most of</span></span>
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<pre style="margin: 0;">+<span id="LC142" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- these don't actually want to be lazy. We should add a strict</span></span>
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<pre style="margin: 0;">+<span id="LC143" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- variant and use it where appropriate.</span></span>
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<pre style="margin: 0;">+<span id="LC144" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC145" class="line" lang="haskell"><span class="cd">-- | Monadic version of mapAccumL</span></span>
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<pre style="margin: 0;"> <span id="LC146" class="line" lang="haskell"><span class="n" style="color: #333;">mapAccumLM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Monad</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;"> <span id="LC147" class="line" lang="haskell">            <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="p">(</span><span class="n" style="color: #333;">acc</span><span class="p">,</span> <span class="n" style="color: #333;">y</span><span class="p">))</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ combining function</span></span>
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<pre style="margin: 0;"> <span id="LC148" class="line" lang="haskell">            <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">acc</span>                      <span class="c1" style="color: #998; font-style: italic;">-- ^ initial state</span></span>
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<pre style="margin: 0;"> <span id="LC149" class="line" lang="haskell">            <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="n" style="color: #333;">x</span><span class="p">]</span>                      <span class="c1" style="color: #998; font-style: italic;">-- ^ inputs</span></span>
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<pre style="margin: 0;"> <span id="LC150" class="line" lang="haskell">            <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="p">(</span><span class="n" style="color: #333;">acc</span><span class="p">,</span> <span class="p">[</span><span class="n" style="color: #333;">y</span><span class="p">])</span>             <span class="c1" style="color: #998; font-style: italic;">-- ^ final state, outputs</span></span>
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<pre style="margin: 0;">-<span id="LC147" class="line" lang="haskell"><span class="n" style="color: #333;">mapAccumLM</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span>     <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">s</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC148" class="line" lang="haskell"><span class="n" style="color: #333;">mapAccumLM</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">s</span> <span class="p">(</span><span class="n" style="color: #333;">x</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">xs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
</pre>
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149
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<pre style="margin: 0;">-<span id="LC149" class="line" lang="haskell">    <span class="p">(</span><span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="n" style="color: #333;">x'</span><span class="p">)</span>  <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">x</span></span>
</pre>
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150
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<td class="diff-line-num new_line old" data-linenumber="151" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC150" class="line" lang="haskell">    <span class="p">(</span><span class="n" style="color: #333;">s2</span><span class="p">,</span> <span class="n" style="color: #333;">xs'</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapAccumLM</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">s1</span> <span class="n" style="color: #333;">xs</span></span>
</pre>
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151
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<pre style="margin: 0;">-<span id="LC151" class="line" lang="haskell">    <span class="n" style="color: #333;">return</span>    <span class="p">(</span><span class="n" style="color: #333;">s2</span><span class="p">,</span> <span class="n" style="color: #333;">x'</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">xs'</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="151" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
151
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<pre style="margin: 0;">+<span id="LC151" class="line" lang="haskell"><span class="n" style="color: #333;">mapAccumLM</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">xs</span> <span class="o" style="font-weight: 600;">=</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="152" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="152" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
152
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<pre style="margin: 0;">+<span id="LC152" class="line" lang="haskell">  <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">xs</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="152" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="153" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
153
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<pre style="margin: 0;">+<span id="LC153" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="152" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="154" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
154
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<pre style="margin: 0;">+<span id="LC154" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">s</span> <span class="p">(</span><span class="n" style="color: #333;">x</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">xs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="152" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="155" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
155
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<pre style="margin: 0;">+<span id="LC155" class="line" lang="haskell">      <span class="p">(</span><span class="n" style="color: #333;">s1</span><span class="p">,</span> <span class="n" style="color: #333;">x'</span><span class="p">)</span>  <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">x</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="156" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
156
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<pre style="margin: 0;">+<span id="LC156" class="line" lang="haskell">      <span class="p">(</span><span class="n" style="color: #333;">s2</span><span class="p">,</span> <span class="n" style="color: #333;">xs'</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">s1</span> <span class="n" style="color: #333;">xs</span></span>
</pre>
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<td class="diff-line-num new new_line" data-linenumber="157" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
157
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<pre style="margin: 0;">+<span id="LC157" class="line" lang="haskell">      <span class="n" style="color: #333;">return</span>    <span class="p">(</span><span class="n" style="color: #333;">s2</span><span class="p">,</span> <span class="n" style="color: #333;">x'</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">xs'</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="152" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="158" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
158
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<pre style="margin: 0;">+<span id="LC158" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">s</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">s</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span></span>
</pre>
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152
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<td class="diff-line-num new_line" data-linenumber="159" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
159
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<pre style="margin: 0;"> <span id="LC159" class="line" lang="haskell"></span>
</pre>
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153
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<td class="diff-line-num new_line" data-linenumber="160" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
160
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<pre style="margin: 0;"> <span id="LC160" class="line" lang="haskell"><span class="cd">-- | Monadic version of mapSnd</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="154" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
154
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<td class="diff-line-num new_line" data-linenumber="161" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
161
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<pre style="margin: 0;"> <span id="LC161" class="line" lang="haskell"><span class="n" style="color: #333;">mapSndM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Monad</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">c</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="n" style="color: #333;">a</span><span class="p">,</span><span class="n" style="color: #333;">b</span><span class="p">)]</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="p">[(</span><span class="n" style="color: #333;">a</span><span class="p">,</span><span class="n" style="color: #333;">c</span><span class="p">)]</span></span>
</pre>
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155
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<td class="diff-line-num new_line old" data-linenumber="162" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC155" class="line" lang="haskell"><span class="n" style="color: #333;">mapSndM</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span>         <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="156" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
156
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<td class="diff-line-num new_line old" data-linenumber="162" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC156" class="line" lang="haskell"><span class="n" style="color: #333;">mapSndM</span> <span class="n" style="color: #333;">f</span> <span class="p">((</span><span class="n" style="color: #333;">a</span><span class="p">,</span><span class="n" style="color: #333;">b</span><span class="p">)</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">xs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">b</span><span class="p">;</span> <span class="n" style="color: #333;">rs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapSndM</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">xs</span><span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">((</span><span class="n" style="color: #333;">a</span><span class="p">,</span><span class="n" style="color: #333;">c</span><span class="p">)</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">rs</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC162" class="line" lang="haskell"><span class="n" style="color: #333;">mapSndM</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">xs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">xs</span></span>
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<pre style="margin: 0;">+<span id="LC163" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC164" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span>         <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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<pre style="margin: 0;">+<span id="LC165" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="p">((</span><span class="n" style="color: #333;">a</span><span class="p">,</span><span class="n" style="color: #333;">b</span><span class="p">)</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">xs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">b</span><span class="p">;</span> <span class="n" style="color: #333;">rs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">xs</span><span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">((</span><span class="n" style="color: #333;">a</span><span class="p">,</span><span class="n" style="color: #333;">c</span><span class="p">)</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">rs</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC166" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC167" class="line" lang="haskell"><span class="cd">-- | Monadic version of concatMap</span></span>
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<pre style="margin: 0;"> <span id="LC168" class="line" lang="haskell"><span class="n" style="color: #333;">concatMapM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Monad</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="p">[</span><span class="n" style="color: #333;">b</span><span class="p">])</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="n" style="color: #333;">a</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="p">[</span><span class="n" style="color: #333;">b</span><span class="p">]</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="185" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -176,15 +185,19 @@ fmapEitherM _ fr (Right b) = fr b >>= (return . Right)</td>
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<pre style="margin: 0;"> <span id="LC185" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC186" class="line" lang="haskell"><span class="cd">-- | Monadic version of 'any', aborts the computation at the first @True@ value</span></span>
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<pre style="margin: 0;"> <span id="LC187" class="line" lang="haskell"><span class="n" style="color: #333;">anyM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Monad</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="n" style="color: #333;">a</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
</pre>
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<pre style="margin: 0;">-<span id="LC179" class="line" lang="haskell"><span class="n" style="color: #333;">anyM</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span>     <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;">-<span id="LC180" class="line" lang="haskell"><span class="n" style="color: #333;">anyM</span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="n" style="color: #333;">x</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">xs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span></span>
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<pre style="margin: 0;">+<span id="LC188" class="line" lang="haskell"><span class="n" style="color: #333;">anyM</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">xs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">xs</span></span>
</pre>
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<pre style="margin: 0;">+<span id="LC189" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="181" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="190" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
190
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<pre style="margin: 0;">+<span id="LC190" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="181" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="191" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
191
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<pre style="margin: 0;">+<span id="LC191" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">x</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">xs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">x</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="181" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
181
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<td class="diff-line-num new_line" data-linenumber="192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
192
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<pre style="margin: 0;"> <span id="LC192" class="line" lang="haskell">                   <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">b</span> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="182" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
182
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<td class="diff-line-num new_line old" data-linenumber="193" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC182" class="line" lang="haskell">                        <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;"><span class="idiff left">anyM</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">f</span></span> <span class="n" style="color: #333;">xs</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="183" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="193" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
193
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<pre style="margin: 0;">+<span id="LC193" class="line" lang="haskell">                        <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;"><span class="idiff left right">go</span></span> <span class="n" style="color: #333;">xs</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="183" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
183
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<td class="diff-line-num new_line" data-linenumber="194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
194
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<pre style="margin: 0;"> <span id="LC194" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="184" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
184
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<td class="diff-line-num new_line" data-linenumber="195" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
195
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<pre style="margin: 0;"> <span id="LC195" class="line" lang="haskell"><span class="cd">-- | Monad version of 'all', aborts the computation at the first @False@ value</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="185" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
185
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<td class="diff-line-num new_line" data-linenumber="196" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
196
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<pre style="margin: 0;"> <span id="LC196" class="line" lang="haskell"><span class="n" style="color: #333;">allM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Monad</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="n" style="color: #333;">a</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="186" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
186
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<td class="diff-line-num new_line old" data-linenumber="197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC186" class="line" lang="haskell"><span class="n" style="color: #333;">allM</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span>     <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="187" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
187
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<td class="diff-line-num new_line old" data-linenumber="197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC187" class="line" lang="haskell"><span class="n" style="color: #333;">allM</span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">bs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">bv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">bv</span> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">allM</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">bs</span> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="188" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="197" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
197
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<pre style="margin: 0;">+<span id="LC197" class="line" lang="haskell"><span class="n" style="color: #333;">allM</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">bs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">bs</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="188" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="198" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
198
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<pre style="margin: 0;">+<span id="LC198" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="188" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="199" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
199
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<pre style="margin: 0;">+<span id="LC199" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span>     <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="188" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="200" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
200
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<pre style="margin: 0;">+<span id="LC200" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">bs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">>>=</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">bv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">bv</span> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">bs</span> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="188" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
188
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<td class="diff-line-num new_line" data-linenumber="201" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
201
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<pre style="margin: 0;"> <span id="LC201" class="line" lang="haskell"></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="189" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
189
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<td class="diff-line-num new_line" data-linenumber="202" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
202
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<pre style="margin: 0;"> <span id="LC202" class="line" lang="haskell"><span class="cd">-- | Monadic version of or</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="190" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
190
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<td class="diff-line-num new_line" data-linenumber="203" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
203
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<pre style="margin: 0;"> <span id="LC203" class="line" lang="haskell"><span class="n" style="color: #333;">orM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Monad</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=></span> <span class="n" style="color: #333;">m</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
</pre>
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