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annotate parse.ur @ 21:e7d64ea0f922

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Variant.weaken, mp, and mapR
author Adam Chlipala <adam@chlipala.net>
date Thu, 05 Jan 2012 18:04:04 -0500
parents 8eaaca74a64c
children
rev   line source
adam@9 1 (** Datatypes for describing parse results *)
adam@9 2
adam@9 3 datatype parse a =
adam@9 4 Success of a
adam@9 5 | Failure of string