Mercurial > urweb
view demo/list.urs @ 709:0406e9cccb72
FOREIGN KEY, without ability to link NULL to NOT NULL (and with some lingering problems in row inference)
author | Adam Chlipala <adamc@hcoop.net> |
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date | Tue, 07 Apr 2009 18:47:47 -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