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artur-s/functorsComposition.fsx

Created March 19, 2017 17:59
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Composing functors is for free
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functorsComposition.fsx
let optionListMap f = (Option.map >> List.map) f
let square x = x * x
let squareLifted = optionListMap square
squareLifted [Some 2; None; Some 3]
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