Typed Racket
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Sam Tobin-Hochstadt 4c1cf6b520 Add supertypes for mutable types, so that predicates work correctly.
svn: r17971

original commit: 318833f4226d9249077c772f87ee705ecfd4c617
2010-02-04 23:39:15 +00:00
collects Add supertypes for mutable types, so that predicates work correctly. 2010-02-04 23:39:15 +00:00