48 lines
1.2 KiB
Text
48 lines
1.2 KiB
Text
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<h1 id="lhs-test"
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>lhs test</h1
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><p
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><code
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>unsplit</code
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> is an arrow that takes a pair of values and combines them to return a single value:</p
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><pre class="sourceCode literatehaskell"
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><code
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><span class="Char Special"
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>></span
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><span class="Function FunctionDefinition"
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> unsplit ::</span
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><span class="Normal NormalText"
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> (Arrow a) => (b -> c -> d) -> a (b, c) d</span
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><br
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/><span class="Char Special"
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>></span
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><span class="Normal NormalText"
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> unsplit = arr . </span
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><span class="Function"
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>uncurry</span
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><span class="Normal NormalText"
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> </span
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><br
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/><span class="Char Special"
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>></span
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><span class="Normal NormalText"
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> </span
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><span class="Comment"
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>-- arr (\op (x,y) -> x `op` y) </span
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><br
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/></code
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></pre
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><p
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><code
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>(***)</code
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> combines two arrows into a new arrow by running the two arrows on a pair of values (one arrow on the first item of the pair and one arrow on the second item of the pair).</p
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><pre
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><code
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>f *** g = first f >>> second g
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</code
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></pre
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><blockquote
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><p
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>Here is a block quote section.</p
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></blockquote
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>
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