Query: moose::cookbook::basics::immutable
OS: osx
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
Moose::Cookbook::Basics::Immutable(3) User Contributed Perl Documentation Moose::Cookbook::Basics::Immutable(3)NAMEMoose::Cookbook::Basics::Immutable - Making Moose fast by making your class immutableVERSIONversion 2.0604SYNOPSISpackage Point; use Moose; has 'x' => ( isa => 'Int', is => 'ro' ); has 'y' => ( isa => 'Int', is => 'rw' ); __PACKAGE__->meta->make_immutable;DESCRIPTIONThe Moose metaclass API provides a "make_immutable()" method. Calling this method does two things to your class. First, it makes it faster. In particular, object construction and destruction are effectively "inlined" in your class, and no longer invoke the meta API. Second, you can no longer make changes via the metaclass API, such as adding attributes. In practice, this won't be a problem, as you rarely need to do this after first loading the class.CONCLUSIONWe strongly recommend you make your classes immutable. It makes your code much faster, with a small compile-time cost. This will be especially noticeable when creating many objects.AUTHORMoose is maintained by the Moose Cabal, along with the help of many contributors. See "CABAL" in Moose and "CONTRIBUTORS" in Moose for details.COPYRIGHT AND LICENSEThis software is copyright (c) 2012 by Infinity Interactive, Inc.. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. perl v5.16.2 2012-09-19 Moose::Cookbook::Basics::Immutable(3)
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