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deque-blog/CatMapping.idr

Last active July 20, 2017 19:45
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CatMapping.idr
||| Given a mapper of type (a -> Foldable b), it transforms:
||| - a step function taking values of type `b`
||| - into one taking values of type `a`
catMapping : (Foldable t) => (a -> t b) -> Transducer acc s s a b
catMapping fn = statelessTransducer $
\next, acc, a => runSteps next acc (fn a)
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