attribute::handlers::demo::descriptions(3pm) [redhat man page]

Attribute::Handlers::demo::Descriptions(3pm)		 Perl Programmers Reference Guide	      Attribute::Handlers::demo::Descriptions(3pm)

perl v5.8.0							    2002-06-01			      Attribute::Handlers::demo::Descriptions(3pm)

MakeMethods::Attribute(3pm)				User Contributed Perl Documentation			       MakeMethods::Attribute(3pm)

NAME

       Class::MakeMethods::Attribute - Declare generated subs with attribute syntax

SYNOPSIS

	 package MyObject;
	 use Class::MakeMethods::Attribute 'Standard::Hash';

	 sub new    :MakeMethod('new');
	 sub foo    :MakeMethod('scalar');
	 sub bar    :MakeMethod('scalar', { hashkey => 'bar_data' });
	 sub debug  :MakeMethod('Standard::Global:scalar');

DESCRIPTION

       This package allows common types of methods to be generated via a subroutine attribute declaration. (Available in Perl 5.6 and later.)

       Adding the :MakeMethod() attribute to a subroutine declaration causes Class::MakeMethods to create and install a subroutine based on the
       parameters given to the :MakeMethod attribute.

       You can declare a default method-generation class by passing the name of a MakeMethods subclass in the use Class::MakeMethods::Attribute
       statement. This default method-generation class will also apply as the default to any subclasses declared at compile time. If no default
       method-generation class is selected, you will need to fully-qualify all method type declarations.

EXAMPLE

       Here's a typical use of Class::MakeMethods::Attribute:

	 package MyObject;
	 use Class::MakeMethods::Attribute 'Standard::Hash';

	 sub new    :MakeMethod('new');
	 sub foo    :MakeMethod('scalar');
	 sub bar    :MakeMethod('scalar', { hashkey => 'bar_data' });
	 sub debug  :MakeMethod('Standard::Global:scalar');

	 package MySubclass;
	 use base 'MyObject';

	 sub bazzle :MakeMethod('scalar');

       This is equivalent to the following explicit Class::MakeMethods invocations:

	 package MyObject;

	 use Class::MakeMethods (
	   -MakerClass => 'Standard::Hash',
	   new => 'new',
	   scalar => 'foo',
	   scalar => [ 'ba', { hashkey => 'bar_data' } ],
	   'Standard::Global:scalar' => 'debug',
	 );

	 package MySubclass;
	 use base 'MyObject';

	 use Class::MakeMethods (
	   -MakerClass => 'Standard::Hash',
	   scalar => 'bazzle',
	 );

DIAGNOSTICS

       The following warnings and errors may be produced when using Class::MakeMethods::Attribute to generate methods. (Note that this list does
       not include run-time messages produced by calling the generated methods, or the standard messages produced by Class::MakeMethods.)

       Can't apply MakeMethod attribute to %s declaration.
	   You can not use the ":MakeMethod" attribute with lexical or anonymous subroutine declarations.

       No method type provided for MakeMethod attribute.
	   You called ":MakeMethod()" without the required method-type argument.

SEE ALSO

       See Attribute::Handlers byEDamian Conway.

       See Class::MakeMethods for general information about this distribution.

perl v5.10.1							    2004-09-06					       MakeMethods::Attribute(3pm)