Mercurial > urweb
view lib/ur/option.ur @ 841:44c2c089ca15
Start of Option; Basis.current; fix missed cases in Jscomp.isNullable
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sun, 07 Jun 2009 11:13:18 -0400 |
parents | |
children | 74a1e3bdf430 |
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datatype t = datatype Basis.option fun isSome [a] x = case x of None => False | Some _ => True