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deque-blog/runSteps.idr

Last active July 16, 2017 19:21
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runSteps.idr
runSteps : (Foldable t) => Step st acc elem -> acc -> t elem -> State st (Status acc)
runSteps step acc elems =
foldr stepImpl (pure . id) elems (Continue acc) -- Using continuation passing style
where
stepImpl _ nextIteration (Done acc) = pure (Done acc)
stepImpl e nextIteration (Continue acc) = step acc e >>= nextIteration
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