moose::cookbook::basics::immutable(3) [osx man page]
Moose::Cookbook::Basics::Immutable(3) User Contributed Perl Documentation Moose::Cookbook::Basics::Immutable(3)NAME
Moose::Cookbook::Basics::Immutable - Making Moose fast by making your class immutable
VERSION
version 2.0604
SYNOPSIS
package Point;
use Moose;
has 'x' => ( isa => 'Int', is => 'ro' );
has 'y' => ( isa => 'Int', is => 'rw' );
__PACKAGE__->meta->make_immutable;
DESCRIPTION
The 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.
CONCLUSION
We 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.
AUTHOR
Moose 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 LICENSE
This 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)
Check Out this Related Man Page
Moose::Cookbook::Basics::DateTime_ExtendingNonMooseParenUser Contributed Perl DocumentMoose::Cookbook::Basics::DateTime_ExtendingNonMooseParent(3)NAME
Moose::Cookbook::Basics::DateTime_ExtendingNonMooseParent - Extending a non-Moose parent class
VERSION
version 2.0604
SYNOPSIS
package My::DateTime;
use Moose;
use MooseX::NonMoose;
use DateTime::Calendar::Mayan;
extends qw( DateTime );
has 'mayan_date' => (
is => 'ro',
isa => 'DateTime::Calendar::Mayan',
init_arg => undef,
lazy => 1,
builder => '_build_mayan_date',
clearer => '_clear_mayan_date',
predicate => 'has_mayan_date',
);
after 'set' => sub {
$_[0]->_clear_mayan_date;
};
sub _build_mayan_date {
DateTime::Calendar::Mayan->from_object( object => $_[0] );
}
DESCRIPTION
This recipe demonstrates how to use Moose to subclass a parent which is not Moose based. This recipe only works if the parent class uses a
blessed hash reference for object instances. If your parent is doing something funkier, you should check out MooseX::NonMoose::InsideOut
and MooseX::InsideOut.
The meat of this recipe is contained in MooseX::NonMoose, which does all the grunt work for you.
AUTHOR
Moose 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 LICENSE
This 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::DateTime_ExtendingNonMooseParent(3)
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This is managed today in the following way : all the processes
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Hi friends,
I hope u people are ok and doing fine.
I have this small problem with the derived class. I have created te base class and there is a small problem with the definition of the derived class which the compiler is pointing out, could you please help me. Here is my code
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Error changing medium type from Normal to Immutable.
Cannot change the type of medium '/root/VirtualBox VMs/fedora13/fedora13.vmdk' because it is attached to 1 virtual machines
Please help me... (2 Replies)