Idris2/tests/idris2/interactive010/IEdit.idr

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data Vect : Nat -> Type -> Type where
Nil : Vect Z a
(::) : a -> Vect k a -> Vect (S k) a
%name Vect xs, ys, zs
dupAll : Vect n a -> Vect n (a, a)
dupAll xs = zipHere xs xs
where
zipHere : forall n . Vect n a -> Vect n b -> Vect n (a, b)