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annotate tests/pprint.ur @ 1860:d54984564bcd

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Make that error message even more helpful
author Adam Chlipala <adam@chlipala.net>
date Wed, 17 Jul 2013 10:48:31 -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