Set::Object::Weak - Sets without the referant reference increment

 use Set::Object::Weak qw(weak_set);

 my $set = Set::Object::Weak->new( 0, "", {}, [], $object );
 # or
 my $set = weak_set( 0, "", {}, [], $object );

 print $set->size;  # 2 - the scalars aren't objects

Sets, but weak. See weaken in Set::Object.

Note that the set in Set::Object::Weak returns weak sets. This is intentional, so that you can make all the sets in scope weak just by changing use Set::Object to use Set::Object::Weak.

new

This class method is exactly the same as Set::Object->new, except that it returns a weak set.

weak_set( ... )

This optionally exported function is a shortcut for saying Set::Object::Weak->new(...).

set( ... )

This method is exported so that if you see:

 use Set::Object qw(set);

You can turn it into using weak sets lexically with:

 use Set::Object::Weak qw(set);

Set::Object 1.19 had a bug in this method that meant that it would not add the passed members into it.

Set::Object

Perl magic by Sam Vilain, <samv@cpan.org>

Idea from nothingmuch.