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deque-blog/takingWhile.idr

Last active July 28, 2017 14:43
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takingWhile.idr
takingWhile : (a -> Bool) -> Transducer acc s s a a
takingWhile p = statelessTransducer $
\next, acc, a => do
if p a -- If the element a satisfies the predicate
then next acc a -- * Then forwards it to the rest of the pipe-line
else pure (Done acc) -- * Else trigger an early termination
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