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SuSE 11.3 - man page for set::scalar::valueduniverse (suse section 3)

Set::Scalar::ValuedUniverse(3)				User Contributed Perl Documentation			    Set::Scalar::ValuedUniverse(3)

Set::Scalar::ValuedUniverse - universes for valued set members
Do not use directly.
There are only two guaranteed interfaces, both sort of indirect. The first one is accessing the universe of a valued set: $valued_set->universe This contains the members of the universe $valued_set->universe->members of the $valued_set. The second supported interface is displaying universes of valued sets. print $valued_set->universe, "\n"; This will display the members of the valued set inside square brackets: [], as opposed to valued sets, which have their members shown inside parentheses: ().
Jarkko Hietaniemi <> perl v5.12.1 2001-05-03 Set::Scalar::ValuedUniverse(3)