comparison lib/ur/option.ur @ 1089:f1647f16097d

Convenience libifying; allow more NULLs with globals
author Adam Chlipala <adamc@hcoop.net>
date Thu, 24 Dec 2009 15:49:52 -0500
parents 757dbac0454d
children a99b743a3087
comparison
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1088:5f72a66402f7 1089:f1647f16097d