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+Wed Mar 3 18:35:55 2010 Yukihiro Matsumoto <matz@ruby-lang.org>
+
+ * hash.c (rb_hash_select_bang): add #select! and keep_if to Hash.
+
+ * hash.c (env_select_bang): ..and to ENV.
+
Wed Mar 3 15:54:20 2010 Yukihiro Matsumoto <matz@ruby-lang.org>
* lib/matrix.rb (Vector#each2, collect2): small refactoring.