view final_main/src/AgdaElem.agda @ 0:83f997abf3b5

first commit
author e155702
date Thu, 14 Feb 2019 16:51:50 +0900
parents
children
line wrap: on
line source

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