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Marge Bot pushed to branch master
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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Commits:
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/0c6f7f7eb94f80d3ed74a382af8a3294d070e740">0c6f7f7e</a></strong>
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<span>by Simon Jakobi</span>
<i>at 2019-05-31T06:01:55Z</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Implement (Functor.<$) for Array
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<h4>1 changed file:</h4>
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libraries/base/GHC/Arr.hs
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<h4>Changes:</h4>
<li id="7277b4e0193cf6a3a60bedb331451a54dafb1afb">
<a href="https://gitlab.haskell.org/ghc/ghc/commit/0c6f7f7eb94f80d3ed74a382af8a3294d070e740#7277b4e0193cf6a3a60bedb331451a54dafb1afb"><strong>libraries/base/GHC/Arr.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -848,6 +848,15 @@ cmpIntArray arr1@(Array l1 u1 n1 _) arr2@(Array l2 u2 n2 _) =</td>
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848
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848
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<pre style="margin: 0;"> <span id="LC848" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Functor</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Array</span> <span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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849
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849
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<pre style="margin: 0;"> <span id="LC849" class="line" lang="haskell"> <span class="n" style="color: #333;">fmap</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">amap</span></span>
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850
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850
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<pre style="margin: 0;"> <span id="LC850" class="line" lang="haskell"></span>
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851
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<pre style="margin: 0;">+<span id="LC851" class="line" lang="haskell"> <span class="cp" style="color: #999; font-weight: 600;">{-# INLINE (<$) #-}</span></span>
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<pre style="margin: 0;">+<span id="LC852" class="line" lang="haskell"> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;"><$</span> <span class="kt" style="color: #458; font-weight: 600;">Array</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">u</span> <span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">+<span id="LC853" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Sadly we can't just use 'newSTArray' (with 'unsafeFreezeSTArray')</span></span>
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<pre style="margin: 0;">+<span id="LC854" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- since that would require proof that the indices of the original array</span></span>
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<pre style="margin: 0;">+<span id="LC855" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- are instances of 'Ix'.</span></span>
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856
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<pre style="margin: 0;">+<span id="LC856" class="line" lang="haskell"> <span class="n" style="color: #333;">runST</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">ST</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">s1</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">+<span id="LC857" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">newArray</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">s1</span><span class="o" style="font-weight: 600;">#</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC858" class="line" lang="haskell"> <span class="p">(</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s2</span><span class="o" style="font-weight: 600;">#</span><span class="p">,</span> <span class="n" style="color: #333;">marr</span><span class="o" style="font-weight: 600;">#</span> <span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">done</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">u</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">marr</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">s2</span><span class="o" style="font-weight: 600;">#</span></span>
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<pre style="margin: 0;">+<span id="LC859" class="line" lang="haskell"></span>
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851
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<pre style="margin: 0;"> <span id="LC860" class="line" lang="haskell"><span class="cd">-- | @since 2.01</span></span>
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852
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<pre style="margin: 0;"> <span id="LC861" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ix</span> <span class="n" style="color: #333;">i</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Eq</span> <span class="n" style="color: #333;">e</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Eq</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Array</span> <span class="n" style="color: #333;">i</span> <span class="n" style="color: #333;">e</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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853
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862
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<pre style="margin: 0;"> <span id="LC862" class="line" lang="haskell"> <span class="p">(</span><span class="o" style="font-weight: 600;">==</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">eqArray</span></span>
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