src/Pure/Concurrent/single_assignment.ML
Mon, 11 Jul 2011 22:55:47 +0200 wenzelm tuned signature -- corresponding to Scala version;
Thu, 22 Jul 2010 14:59:27 +0200 wenzelm eliminated some unreferenced identifiers;
Mon, 31 May 2010 21:06:57 +0200 wenzelm modernized some structure names, keeping a few legacy aliases;
Sat, 06 Feb 2010 22:01:48 +0100 wenzelm explicit representation of single-assignment variables;
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