Mercurial > urweb

view tests/pprint.ur @ 1768:a613cae954ca

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Some standard library additions from Edward Z. Yang
author Adam Chlipala <adam@chlipala.net>
date Sat, 19 May 2012 11:32:12 -0400
parents 318ba997a149
children
line wrap: on
line source
fun isNone [a] (x : option a) =
    case x of
        None => True
      | Some _ => False