23 lines
513 B
ReStructuredText
23 lines
513 B
ReStructuredText
lhs test
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========
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``unsplit`` is an arrow that takes a pair of values and combines them to
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return a single value:
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.. code:: haskell
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unsplit :: (Arrow a) => (b -> c -> d) -> a (b, c) d
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unsplit = arr . uncurry
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-- arr (\op (x,y) -> x `op` y)
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``(***)`` combines two arrows into a new arrow by running the two arrows on a
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pair of values (one arrow on the first item of the pair and one arrow on the
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second item of the pair).
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::
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f *** g = first f >>> second g
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Block quote:
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foo bar
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