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view tests/pprint.ur @ 1767:1bbad32cb4a8

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author Adam Chlipala <adam@chlipala.net>
date Thu, 17 May 2012 16:22:05 -0400
parents 318ba997a149
children
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fun isNone [a] (x : option a) =
    case x of
        None => True
      | Some _ => False