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view tests/pprint.ur @ 2095:d9f918b79b5a

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List.mem
author Adam Chlipala <adam@chlipala.net>
date Tue, 23 Dec 2014 14:41:23 -0500
parents 318ba997a149
children
line wrap: on
line source
fun isNone [a] (x : option a) =
    case x of
        None => True
      | Some _ => False