Mercurial > urweb

view lib/ur/option.urs @ 1404:82b204f20026

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Patch from Vladimir Shabanov to support implicit passing of 'time' values from server to client
author Adam Chlipala <adam@chlipala.net>
date Thu, 20 Jan 2011 10:40:40 -0500
parents 757dbac0454d
children a99b743a3087
line wrap: on
line source
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

val get : a ::: Type -> a -> option a -> a