39 lines
911 B
Text
39 lines
911 B
Text
<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 haskell"
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><code
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>> unsplit :: (<span class="dt"
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>Arrow</span
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> a) => (b -> c -> d) -> a (b, c) d<br
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/>> unsplit <span class="fu"
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>=</span
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> arr <span class="fu"
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>.</span
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> <span class="fu"
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>uncurry</span
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> <br
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/>> <span class="co"
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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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><p
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>Block quote:</p
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><blockquote
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><p
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>foo bar</p
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></blockquote
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>
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