view parse.ur @ 27:ca1c07d49b5e

Type-directed case matching for variants.
author Edward Z. Yang <ezyang@mit.edu>
date Thu, 26 Jul 2012 16:39:02 -0400
parents 8eaaca74a64c
children
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(** Datatypes for describing parse results *)

datatype parse a =
         Success of a
       | Failure of string