Overloading won't be necessary. You can tie an array to your Foo::Bar object by defining the methods Foo::Bar::TIEARRAY(), Foo::Bar::FETCH, Foo::Bar::STORE(), etc. They will all look like ordinary instance methods except TIEARRAY(), which looks like a class constructor method.

It's not difficult to write methods which tie an array to an array reference. The methods' arguments can be found in perltie. For example,

# args: self, index, value
sub STORE {
    my ($self, $index, $value) = @_;
    $self->[$index] = $value;
}
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All the methods will be equally trivial. You'll need to define most all of the operator methods (POP(), PUSH(), SPLICE(), . . .) to get full array syntax.

The tied operator returns the tied object, so you can call the Foo::Bar::baz() method on your array by,

tied(@array)->baz();
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