lib/set.rb (Set#{delete_if,keep_if,collect!,reject!,select!,classify,divide}, SortedSet#{delete_if,keep_if}): Return sized enumerators.
test/test_set.rb: add test for above.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54903 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
lib/set.rb (Set#{delete_if,keep_if,collect!,reject!,select!,classify,divide},
SortedSet#{delete_if,keep_if}): Return sized enumerators.
test/test_set.rb: add test for above.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54903 b2dd03c8-39d4-4d8f-98ff-823fe69b080e