view tests/pprint.ur @ 1784:e6bc6bbd7a32

Update demo code for key/mouse handler change
author Adam Chlipala <adam@chlipala.net>
date Sat, 21 Jul 2012 10:12:35 -0400
parents 318ba997a149
children
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fun isNone [a] (x : option a) =
    case x of
        None => True
      | Some _ => False