Mercurial > urweb
view lib/ur/option.urs @ 1058:86b831978b8d
Recursive hnormSgn for projections of signatures from modules
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sat, 05 Dec 2009 14:34:44 -0500 |
parents | 8c37699de273 |
children | 757dbac0454d |
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datatype t = datatype Basis.option val eq : a ::: Type -> eq a -> eq (t a) val ord : a ::: Type -> ord a -> ord (t a) val isNone : a ::: Type -> t a -> bool val isSome : a ::: Type -> t a -> bool val mp : a ::: Type -> b ::: Type -> (a -> b) -> t a -> t b val bind : a ::: Type -> b ::: Type -> (a -> option b) -> t a -> t b