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view demo/list.urs @ 594:55829473f6a7

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Injected an option
author Adam Chlipala <adamc@hcoop.net>
date Fri, 02 Jan 2009 13:03:22 -0500
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