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annotate tests/pprint.ur @ 1749:f9e5a8e09cdf

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Simplify type of Basis.tag, regarding 'class' attribute; new compatibility parsing of 'class' values given as string literals
author Adam Chlipala <adam@chlipala.net>
date Sun, 06 May 2012 13:07:13 -0400
parents 318ba997a149
children
rev   line source
adam@1727 1 fun isNone [a] (x : option a) =
adam@1727 2 case x of
adam@1727 3 None => True
adam@1727 4 | Some _ => False