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annotate tests/pprint.ur @ 1884:5c30eea7aa78

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ListPair.map2, based on code by escalier@riseup.net
author Adam Chlipala <adam@chlipala.net>
date Sun, 03 Nov 2013 19:27:30 -0500
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