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gf-core/transfer/examples/array.tr
2005-11-25 16:36:19 +00:00

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import nat ;
data Array : Type -> Nat -> Type where {
Empty : (A:Type) -> Array A Zero ;
Cell : (A:Type) -> (n:Nat) -> A -> Array A n -> Array A (Succ n) ;
} ;
mapA : (A:Type) -> (B:Type) -> (n:Nat) -> (A -> B) -> Array A n -> Array B n ;
mapA A B _ f (Empty _) = Empty B ;
mapA A B (Succ n) f (Cell _ _ x xs) = Cell B n (f x) (mapA A B n f xs) ;