week5/mart/Origami.icl


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module Origami

import StdEnv

sum`         = foldr (+) 0
prod`        = foldr (*) 1
flatten`     = foldr (++) []
length`      = foldr (\x l=l+1) 0
reverse`     = foldl (\xs x=[x:xs]) []
takeWhile` p = foldr (\x xs=if (p x) [x:xs] []) []
maxList`     = foldr (\x m=if (m<x) x m) 0