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Checking known() correctly, according to a pair of examples
author Adam Chlipala <adamc@hcoop.net>
date Tue, 06 Apr 2010 10:39:15 -0400
parents 20fe00fd81da
children
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fun main () : transaction page = return <xml>
  {[case String.split "abc{" #"{" of
        None => "!"
      | Some (pre, post) => pre ^ post]}
</xml>