Mercurial > urweb
view lib/ur/option.urs @ 958:3aaac251a5af
Pseudo-sort working with filters
author | Adam Chlipala <adamc@hcoop.net> |
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date | Thu, 17 Sep 2009 19:15:10 -0400 |
parents | da3ec6014d2f |
children | 8c37699de273 |
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datatype t = datatype Basis.option val eq : a ::: Type -> eq a -> eq (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