tie::array::sorted(3pm) [debian man page]

Tie::Array::Sorted(3pm) 				User Contributed Perl Documentation				   Tie::Array::Sorted(3pm)

NAME

       Tie::Array::Sorted - An array which is kept sorted

SYNOPSIS

	       use Tie::Array::Sorted;

	       tie @a, "Tie::Array::Sorted", sub { $_[0] <=> $_[1] };

	       push @a, 10, 4, 7, 3, 4;
	       print "@a"; # "3 4 4 7 10"

DESCRIPTION

       This presents an ordinary array, but is kept sorted. All pushes and unshifts cause the elements in question to be inserted in the appropri-
       ate location to maintain order.

       Direct stores ("$a[10] = "wibble"") effectively splice out the original value and insert the new element. It's not clear why you'd want to
       use direct stores like that, but this module does the right thing if you do.

       If you don't like the ordinary lexical comparator, you can provide your own; it should compare the two elements it is given. For instance,
       a numeric comparator would look like this:

	       tie @a, "Tie::Array::Sorted", sub { $_[0] <=> $_[1] }

       Whereas to compare a list of files by their sizes, you'd so something like:

	       tie @a, "Tie::Array::Sorted", sub { -s $_[0] <=> -s $_[1] }

LAZY SORTING

       If you do more stores than fetches, you may find Tie::Array::Sorted::Lazy more efficient.

AUTHOR

       Original author: Simon Cozens

       Current maintainer: Tony Bowden

BUGS and QUERIES
       Please direct all correspondence regarding this module to:      bug-Tie-Array-Sorted@rt.cpan.org

       This module was originall written as part of the Plucene project.  However, as Plucene no longer uses this, it is effectively unmaintained.

COPYRIGHT AND LICENSE

	 Copyright (C) 2003-2006 Simon Cozens and Tony Bowden.

	 This program is free software; you can redistribute it and/or modify it under
	 the terms of the GNU General Public License; either version 2 of the License,
	 or (at your option) any later version.

	 This program is distributed in the hope that it will be useful, but WITHOUT
	 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
	 FOR A PARTICULAR PURPOSE.

perl v5.8.8							    2004-10-10						   Tie::Array::Sorted(3pm)

Tie::RefHash(3pm)					 Perl Programmers Reference Guide					 Tie::RefHash(3pm)

NAME

       Tie::RefHash - use references as hash keys

SYNOPSIS

	   require 5.004;
	   use Tie::RefHash;
	   tie HASHVARIABLE, 'Tie::RefHash', LIST;
	   tie HASHVARIABLE, 'Tie::RefHash::Nestable', 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.  Normally, only the
       keys of the tied hash itself are preserved as references; to use references as keys in hashes-of-hashes, use Tie::RefHash::Nestable,
       included as part of Tie::RefHash.

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

       The Nestable version works by looking for hash references being stored and converting them to tied hashes so that they too can have
       references as keys.  This will happen without warning whenever you store a reference to one of your own hashes in the tied hash.

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';
	   $b->{foo} = 'bar';
	   for (keys %h) {
	      print ref($_), "
";
	   }

	   tie %h, 'Tie::RefHash::Nestable';
	   $h{$a}->{$b} = 1;
	   for (keys %h, keys %{$h{$a}}) {
	      print ref($_), "
";
	   }

THREAD SUPPORT

       Tie::RefHash fully supports threading using the "CLONE" method.

STORABLE SUPPORT

       Storable hooks are provided for semantically correct serialization and cloning of tied refhashes.

RELIC SUPPORT

       This version of Tie::RefHash seems to no longer work with 5.004. This has not been throughly investigated. Patches welcome ;-)

LICENSE

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself

MAINTAINER

       Yuval Kogman <nothingmuch@woobling.org>

AUTHOR

       Gurusamy Sarathy        gsar@activestate.com

       'Nestable' by Ed Avis   ed@membled.com

SEE ALSO

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

perl v5.16.2							    2012-10-11							 Tie::RefHash(3pm)