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view tests/pprint.ur @ 2185:cbd294994c69

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Monad.mapR3
author Adam Chlipala <adam@chlipala.net>
date Sat, 31 Oct 2015 11:49:30 -0400
parents 318ba997a149
children
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line source
fun isNone [a] (x : option a) =
    case x of
        None => True
      | Some _ => False