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28 lines
476 B
Idris
28 lines
476 B
Idris
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module LetBinders
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infix 1 :::
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record List1 (a : Type) where
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constructor (:::)
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head : a
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tail : List a
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swap : List1 a -> List1 a
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swap aas =
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let (a ::: as) := aas in
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let (b :: bs) = as
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rest = a :: bs
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in b ::: rest
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identity : List (Nat, a) -> List (List a)
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identity =
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let
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replicate : (n : Nat) -> a -> List a
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replicate Z a = []
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replicate (S n) a = a :: replicate n a
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closure := uncurry replicate
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in map closure
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