annotate tests/pprint.ur @ 2257:28a541bd2d23

Use referenced (rather than all) free variables as keys for pure caches.
author Ziv Scully <ziv@mit.edu>
date Sun, 27 Sep 2015 14:46:12 -0400
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