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annotate tests/pprint.ur @ 1790:56b8efff64e7

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Nicer <active> semantics
author Adam Chlipala <adam@chlipala.net>
date Sun, 22 Jul 2012 09:42:17 -0400
parents 318ba997a149
children
rev   line source
adam@1727 1 fun isNone [a] (x : option a) =
adam@1727 2 case x of
adam@1727 3 None => True
adam@1727 4 | Some _ => False