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Tie::RefHash
use references as hash keys

Tie::RefHash - use references as hash keys


NAME

Tie::RefHash - use references as hash keys


SYNOPSIS


    require 5.004;

    use Tie::RefHash;

    tie HASHVARIABLE, 'Tie::RefHash', LIST;

    untie HASHVARIABLE;


DESCRIPTION

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.


EXAMPLE


    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";

    }


AUTHOR

Gurusamy Sarathy gsar@activestate.com


VERSION

Version 1.21 22 Jun 1999


SEE ALSO

perl(1), perlfunc(1), perltie(1)

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