view demo/list.urs @ 1925:15802a00816c

activeHead: don't modify the head. just execute the code provided
author Sergey Mironov <grrwlf@gmail.com>
date Fri, 06 Dec 2013 14:52:47 +0400
parents 4d519baf357c
children
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datatype list t = Nil | Cons of t * list t

val length : t ::: Type -> list t -> int

val rev : t ::: Type -> list t -> list t