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view tests/pprint.ur @ 2218:f7113855f3b7

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More invalidation progress.
author Ziv Scully <ziv@mit.edu>
date Tue, 11 Nov 2014 04:25:20 -0500
parents 318ba997a149
children
line wrap: on
line source
fun isNone [a] (x : option a) =
    case x of
        None => True
      | Some _ => False