Extracted from Pike v7.8 release 866 at 2016-11-06.
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ADT
ADT.Set

Methods
 _indices()
 _sizeof()
 _sprintf()
 _values()
 `!=()
 `&()
 `-()
 `<()
 `==()
 `>()
 `[]()
 `[]=()
 `|()
 add()
 cast()
 contains()
 create()
 filter()
 filter_destructively()
 is_empty()
 map()
 remove()
 reset()
 subset()
 superset()
previousADT.Set()->filter_destructively()
ADT.Set()->map()next

Method ADT.Set()->is_empty()

Method is_empty

int(0..1) is_empty()

Description

Returns 1 if the set is empty, otherwise 0.