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view demo/list.urs @ 1567:5691ec310618

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Basis.null
author Adam Chlipala <adam@chlipala.net>
date Thu, 06 Oct 2011 09:50:40 -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