Mercurial > urweb
annotate lib/ur/option.urs @ 992:b825d843b22d
Finalized Orm1 demo
author | Adam Chlipala <adamc@hcoop.net> |
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date | Tue, 06 Oct 2009 13:11:03 -0400 |
parents | 8c37699de273 |
children | 757dbac0454d |
rev | line source |
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adamc@841 | 1 datatype t = datatype Basis.option |
adamc@841 | 2 |
adamc@846 | 3 val eq : a ::: Type -> eq a -> eq (t a) |
adamc@961 | 4 val ord : a ::: Type -> ord a -> ord (t a) |
adamc@846 | 5 |
adamc@944 | 6 val isNone : a ::: Type -> t a -> bool |
adamc@841 | 7 val isSome : a ::: Type -> t a -> bool |
adamc@844 | 8 |
adamc@844 | 9 val mp : a ::: Type -> b ::: Type -> (a -> b) -> t a -> t b |
adamc@846 | 10 val bind : a ::: Type -> b ::: Type -> (a -> option b) -> t a -> t b |