Moose::Meta::Attribute::Native::Trait::String.3pm

Langue: en

Version: 2010-06-15 (ubuntu - 24/10/10)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

Moose::Meta::Attribute::Native::Trait::String - Helper trait for Str attributes

SYNOPSIS

   package MyHomePage;
   use Moose;
 
   has 'text' => (
       traits    => ['String'],
       is        => 'rw',
       isa       => 'Str',
       default   => q{},
       handles   => {
           add_text     => 'append',
           replace_text => 'replace',
       },
   );
 
   my $page = MyHomePage->new();
   $page->add_text("foo"); # same as $page->text($page->text . "foo");

DESCRIPTION

This module provides a simple string attribute, to which mutating string operations can be applied more easily (no need to make an lvalue attribute metaclass or use temporary variables). Additional methods are provided for completion.

If your attribute definition does not include any of is, isa, default or handles but does use the "String" metaclass, then this module applies defaults as in the ``SYNOPSIS'' above. This allows for a very basic string definition:

   has 'foo' => (traits => ['String']);
   $obj->append_foo;

PROVIDED METHODS

These methods are implemented in Moose::Meta::Attribute::Native::MethodProvider::String. It is important to note that all those methods do in place modification of the value stored in the attribute.
inc
Increments the value stored in this slot using the magical string autoincrement operator. Note that Perl doesn't provide analogous behavior in "--", so "dec" is not available.
append($string)
Append a string, like ".=".
prepend($string)
Prepend a string.
replace($pattern, $replacement)
Performs a regexp substitution (``s'' in perlop). There is no way to provide the "g" flag, but code references will be accepted for the replacement, causing the regex to be modified with a single "e". "/smxi" can be applied using the "qr" operator.
match($pattern)
Like "replace" but without the replacement. Provided mostly for completeness.
chop
``chop'' in perlfunc
chomp
``chomp'' in perlfunc
clear
Sets the string to the empty string (not the value passed to "default").
length
``length'' in perlfunc
substr
``substr'' in perlfunc. We go to some lengths to match the different functionality based on "substr"'s arity.

METHODS

meta
method_provider
has_method_provider

BUGS

See ``BUGS'' in Moose for details on reporting bugs.

AUTHOR

Stevan Little <stevan@iinteractive.com> Copyright 2007-2009 by Infinity Interactive, Inc.

<http://www.iinteractive.com>

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