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Support 'safeGet' in demos
author Adam Chlipala <adam@chlipala.net>
date Fri, 25 Nov 2011 17:19:34 -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