Mercurial > urweb
diff lib/ur/option.ur @ 1207:ae3036773768
Introduced the known() predicate
author | Adam Chlipala <adamc@hcoop.net> |
---|---|
date | Tue, 06 Apr 2010 09:51:36 -0400 |
parents | 757dbac0454d |
children | a99b743a3087 |
author | Adam Chlipala <adamc@hcoop.net> |
---|---|
date | Tue, 06 Apr 2010 09:51:36 -0400 |
parents | 757dbac0454d |
children | a99b743a3087 |