class::makemethods::template::inheritable(3pm) [debian man page]

MakeMethods::Template::Inheritable(3pm) 		User Contributed Perl Documentation		   MakeMethods::Template::Inheritable(3pm)

NAME

       Class::MakeMethods::Template::Inheritable - Overridable data

SYNOPSIS

	 package MyClass;

	 use Class::MakeMethods( 'Template::Inheritable:scalar' => 'foo' );
	 # We now have an accessor method for an "inheritable" scalar value

	 MyClass->foo( 'Foozle' );   # Set a class-wide value
	 print MyClass->foo();	     # Retrieve class-wide value

	 my $obj = MyClass->new(...);
	 print $obj->foo();	     # All instances "inherit" that value...

	 $obj->foo( 'Foible' );      # until you set a value for an instance.
	 print $obj->foo();	     # This now finds object-specific value.
	 ...

	 package MySubClass;
	 @ISA = 'MyClass';

	 print MySubClass->foo();    # Intially same as superclass,
	 MySubClass->foo('Foobar');  # but overridable per subclass,
	 print $subclass_obj->foo(); # and shared by its instances
	 $subclass_obj->foo('Fosil');# until you override them...
	 ...

DESCRIPTION

       The MakeMethods subclass provides accessor methods that search an inheritance tree to find a value. This allows you to set a shared or
       default value for a given class, and optionally override it in a subclass.

   Standard Methods
       The following methods from Generic should be supported:

	 scalar
	 string
	 string_index (?)
	 number
	 boolean (?)
	 bits (?)
	 array (?)
	 hash (?)
	 tiedhash (?)
	 hash_of_arrays (?)
	 object (?)
	 instance (?)
	 array_of_objects (?)
	 code (?)
	 code_or_scalar (?)

       See Class::MakeMethods::Template::Generic for the interfaces and behaviors of these method types.

       The items marked with a * above are specifically defined in this package, whereas the others are formed automatically by the interaction of
       this package's generic settings with the code templates provided by the Generic superclass.

       The items marked with a ? above have not been tested sufficiently; please inform the author if they do not function as you would expect.

SEE ALSO

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

       See Class::MakeMethods::Template for more about this family of subclasses.

       See Class::MakeMethods::Template::Generic for information about the various accessor interfaces subclassed herein.

       If you just need scalar accessors, see Class::Data::Inheritable for a very elegant and efficient implementation.

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

MakeMethods::Template::InsideOut(3pm)			User Contributed Perl Documentation		     MakeMethods::Template::InsideOut(3pm)

NAME

       Class::MakeMethods::Template::InsideOut - External data

SYNOPSIS

	 package MyObject;
	 use Class::MakeMethods::Template::InsideOut (
	   scalar	   => [ 'foo', 'bar' ]
	 );
	 sub new { ... }

	 package main;

	 my $obj = MyObject->new( foo => "Foozle", bar => "Bozzle" );
	 print $obj->foo();	       # Prints Foozle
	 $obj->bar("Bamboozle");       # Sets $obj's bar value

DESCRIPTION

       Supports the Generic object constructor and accessors meta-method types, but accepts any object as the underlying implementation type, with
       member data stored in external indices.

       Each method stores the values associated with various objects in an hash keyed by the object's stringified identity. Since that hash is
       accessible only from the generated closures, it is impossible for foreign code to manipulate those values except through the method
       interface.

       A DESTROY method is installed to remove data for expired objects from the various hashes. (If the DESTROY method is not called, your
       program will not release this data and memory will be wasted.)

       Common Parameters: The following parameters are defined for InsideOut meta-methods.

       data
	   An auto-vivified reference to a hash to be used to store the values for each object.

       Note that using InsideOut meta-methods causes the installation of a DESTROY method in the calling class, which deallocates data for each
       instance when it is discarded.

       NOTE: This needs some more work to properly handle inheritance.

   Standard Methods
       The following methods from Generic are all supported:

	 scalar
	 string
	 string_index *
	 number
	 boolean
	 bits
	 array
	 hash
	 tiedhash
	 hash_of_arrays
	 object
	 instance
	 array_of_objects
	 code
	 code_or_scalar

       See Class::MakeMethods::Template::Generic for the interfaces and behaviors of these method types.

       The items marked with a * above are specifically defined in this package, whereas the others are formed automatically by the interaction of
       this package's generic settings with the code templates provided by the Generic superclass.

   boolean_index
	 boolean_index => [ qw / foo bar baz / ]

       Like InsideOut:boolean, boolean_index creates x, set_x, and clear_x methods. However, it also defines a class method find_x which returns a
       list of the objects which presently have the x-flag set to true.

       Note that to free items from memory, you must clear these bits!

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