Mercurial > urweb

annotate lib/ur/option.urs @ 1697:cb0f05bdc183

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Refactor SQL parsing code from Iflow to Sql, add querydml parser.
author Edward Z. Yang <ezyang@mit.edu>
date Mon, 12 Mar 2012 12:00:23 -0700
parents a99b743a3087
children 36428d853c97
rev   line source
adamc@841 1 datatype t = datatype Basis.option
adamc@841 2
adam@1544 3 val monad : monad t
adam@1544 4
adamc@846 5 val eq : a ::: Type -> eq a -> eq (t a)
adamc@961 6 val ord : a ::: Type -> ord a -> ord (t a)
adamc@846 7
adamc@944 8 val isNone : a ::: Type -> t a -> bool
adamc@841 9 val isSome : a ::: Type -> t a -> bool
adamc@844 10
adamc@844 11 val mp : a ::: Type -> b ::: Type -> (a -> b) -> t a -> t b
adamc@846 12 val bind : a ::: Type -> b ::: Type -> (a -> option b) -> t a -> t b
adamc@1068 13
adamc@1068 14 val get : a ::: Type -> a -> option a -> a