Tie::RefHash3pm

Usage

    require 5.004;
    use Tie::RefHash;
    tie HASHVARIABLE, 'Tie::RefHash', LIST;

    untie HASHVARIABLE;

Overview

This module provides the ability to use references as hash keys if you first tie the hash variable to this module.

It is implemented using the standard perl TIEHASH interface. Please see the tie entry in perlfunc(1) and perltie(1) for more information.

Examples

    use Tie::RefHash;
    tie %h, 'Tie::RefHash';
    $a = [];
    $b = {};
    $c = \*main;
    $d = \"gunk";
    $e = sub { 'foo' };
    %h = ($a => 1, $b => 2, $c => 3, $d => 4, $e => 5);
    $a->[0] = 'foo';
    $b->{foo} = 'bar';
    for (keys %h) {
       print ref($_), "\n";
    }

Version

Version 1.2 15 Dec 1996