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Improve wildify heuristic for finding record type-class witnesses
author Adam Chlipala <adam@chlipala.net>
date Tue, 23 Dec 2014 13:42:20 -0500
parents 318ba997a149
children
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line source
fun isNone [a] (x : option a) =
    case x of
        None => True
      | Some _ => False