comparison lib/ur/option.urs @ 1602:e44be6ece475

COALESCE
author Adam Chlipala <adam@chlipala.net>
date Sat, 19 Nov 2011 10:43:57 -0500
parents a99b743a3087
children 36428d853c97
comparison
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1601:78e0d56b594e 1602:e44be6ece475