100 lines
1.8 KiB
Plaintext
100 lines
1.8 KiB
Plaintext
# PODNAME: Moose::Cookbook::Basics::Immutable
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# ABSTRACT: Making Moose fast by making your class immutable
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__END__
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=pod
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=encoding UTF-8
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=head1 NAME
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Moose::Cookbook::Basics::Immutable - Making Moose fast by making your class immutable
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=head1 VERSION
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version 2.2207
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=head1 SYNOPSIS
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package Point;
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use Moose;
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has 'x' => ( isa => 'Int', is => 'ro' );
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has 'y' => ( isa => 'Int', is => 'rw' );
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__PACKAGE__->meta->make_immutable;
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=head1 DESCRIPTION
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The Moose metaclass API provides a C<make_immutable()> method. Calling
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this method does two things to your class. First, it makes it
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faster. In particular, object construction and destruction are
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effectively "inlined" in your class, and no longer invoke the meta
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API.
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Second, you can no longer make changes via the metaclass API, such as
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adding attributes. In practice, this won't be a problem, as you rarely
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need to do this after first loading the class.
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=head1 CONCLUSION
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We strongly recommend you make your classes immutable. It makes your
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code much faster, with a small compile-time cost. This will be
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especially noticeable when creating many objects.
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=head1 AUTHORS
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=over 4
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=item *
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Stevan Little <stevan@cpan.org>
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=item *
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Dave Rolsky <autarch@urth.org>
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=item *
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Jesse Luehrs <doy@cpan.org>
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=item *
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Shawn M Moore <sartak@cpan.org>
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=item *
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יובל קוג'מן (Yuval Kogman) <nothingmuch@woobling.org>
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=item *
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Karen Etheridge <ether@cpan.org>
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=item *
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Florian Ragwitz <rafl@debian.org>
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=item *
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Hans Dieter Pearcey <hdp@cpan.org>
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=item *
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Chris Prather <chris@prather.org>
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=item *
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Matt S Trout <mstrout@cpan.org>
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=back
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=head1 COPYRIGHT AND LICENSE
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This software is copyright (c) 2006 by Infinity Interactive, Inc.
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This is free software; you can redistribute it and/or modify it under
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the same terms as the Perl 5 programming language system itself.
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=cut
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