Mercurial > urweb

annotate lib/ur/option.urs @ 1535:27190faa36a3

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Handle case where shakeExp can remove datatype.
author Karn Kallio <kkallio@eka>
date Sat, 13 Aug 2011 00:07:28 -0430
parents 757dbac0454d
children a99b743a3087
rev   line source
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
adamc@1068 11
adamc@1068 12 val get : a ::: Type -> a -> option a -> a