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view paper/src/AgdaElem.agda @ 109:f6d00a13f923

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author atton
date Mon, 13 Feb 2017 14:11:30 +0900
parents fb42478e4c96
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elem : {A : Set} {{eqA : Eq A}} → A → List A → Bool
elem {{eqA}} x (y ∷ xs) = (Eq._==_ eqA x y) || (elem {{eqA}} x xs)
elem         x []        = false