view paper/src/AgdaElem.agda @ 2:c7acb9211784

add code, figure. and paper fix content
author ryokka
date Mon, 27 Jan 2020 20:41:36 +0900
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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