my $set = new Net::ACL::Set::Scalar(1,42);
This is the constructor for Net::ACL::Set::Scalar objects.
It returns a reference to the newly created object.
It takes one argument. If the argument is an array reference with one element,
the element will be placed instead of the first argument to the set method.
If an array reference has more then one element, the second element should be
the argument number to be replaced in the set method.
Otherwise, the value will directly be used instead of the first argument of
the set method.