ActiveState!

ActivePerl Documentation
Table of Contents

(Usage Statistics)
(about this ver)


* Getting Started
    * Welcome To ActivePerl
    * Release Notes
    * Readme
    * ActivePerl Change Log
* Install Notes
    * Linux
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* ActivePerl Components
    * Overview
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* ActivePerl FAQ
    * Introduction
    * Availability & Install
    * Using PPM
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       * Perl for ISAPI
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 Tie::RefHash - use references as hash keys


NAME

Tie::RefHash - use references as hash keys


SUPPORTED PLATFORMS

  • Linux
  • Solaris
  • Windows

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)

 Tie::RefHash - use references as hash keys