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ctford/Chain.idr

Created November 4, 2017 22:26
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Fuse a chain of functions
Raw
Chain.idr
module Data.Chain
%default total
data Chain : Type -> Type -> Type
where
Link : (a -> b) -> Chain a b
Section : (a -> b) -> Chain b c -> Chain a c
fuse : Chain a b -> a -> b
fuse (Link f) x = f x
fuse (Section f g) x = fuse g $ f x
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