Mercurial > urweb

view lib/ur/option.urs @ 846:0d30e6338c65

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Some standard library reorgs and additions; handle mutual datatypes better in Specialize
author Adam Chlipala <adamc@hcoop.net>
date Tue, 09 Jun 2009 18:11:59 -0400
parents 74a1e3bdf430
children da3ec6014d2f
line wrap: on
line source
datatype t = datatype Basis.option

val eq : a ::: Type -> eq a -> eq (t a)

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