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

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

NAME

       Class::MakeMethods::Utility::Inheritable - "Inheritable" data

SYNOPSIS

	 package MyClass;
	 sub new { ... }

	 package MySubclass;
	 @ISA = 'MyClass';
	 ...
	 my $obj = MyClass->new(...);
	 my $subobj = MySubclass->new(...);

	 use Class::MakeMethods::Utility::Inheritable qw(get_vvalue set_vvalue );

	 my $dataset = {};
	 set_vvalue($dataset, 'MyClass', 'Foobar');    # Set value for class
	 get_vvalue($dataset, 'MyClass');	       # Gets value "Foobar"

	 get_vvalue($dataset, $obj);		       # Objects "inherit"
	 set_vvalue($dataset, $obj, 'Foible');	       # Until you override
	 get_vvalue($dataset, $obj);		       # Now finds "Foible"

	 get_vvalue($dataset, 'MySubclass');	       # Subclass "inherits"
	 get_vvalue($dataset, $subobj); 	       # As do its objects
	 set_vvalue($dataset, 'MySubclass', 'Foozle'); # Until we override it
	 get_vvalue($dataset, 'MySubclass');	       # Now finds "Foozle"

	 get_vvalue($dataset, $subobj); 	       # Change cascades down
	 set_vvalue($dataset, $subobj, 'Foolish');     # Until we override again

	 get_vvalue($dataset, 'MyClass');	       # Superclass is unchanged

DESCRIPTION

       This module provides several functions which allow you to store values in a hash corresponding to both objects and classes, and to retrieve
       those values by searching a object's inheritance tree until it finds a matching entry.

       This functionality is used by Class::MakeMethods::Standard::Inheritable and Class::MakeMethods::Composite::Inheritable to construct methods
       that can both store class data and be overriden on a per-object level.

REFERENCE

   find_vself
	 $vself = find_vself( $dataset, $instance );

       Searches $instance's inheritance tree until it finds a matching entry in the dataset, and returns either the instance, the class that
       matched, or undef.

   get_vvalue
	 $value = get_vvalue( $dataset, $instance );

       Searches $instance's inheritance tree until it finds a matching entry in the dataset, and returns that value

   set_vvalue
	 $value = set_vvalue( $dataset, $instance, $value );

       Searches $instance's inheritance tree until it finds a matching entry in the dataset, and returns that value

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

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

NAME

       Class::MakeMethods::Emulator - Demonstrate class-generator equivalency

SYNOPSIS

	 # Equivalent to use Class::Singleton;
	 use Class::MakeMethods::Emulator::Singleton;

	 # Equivalent to use Class::Struct;
	 use Class::MakeMethods::Emulator::Struct;
	 struct ( ... );

	 # Equivalent to use Class::MethodMaker( ... );
	 use Class::MakeMethods::Emulator::MethodMaker( ... );

	 # Equivalent to use base 'Class::Inheritable';
	 use base 'Class::MakeMethods::Emulator::Inheritable';
	 MyClass->mk_classdata( ... );

	 # Equivalent to use base 'Class::AccessorFast';
	 use base 'Class::MakeMethods::Emulator::AccessorFast';
	 MyClass->mk_accessors(qw(this that whatever));

	 # Equivalent to use accessors( ... );
	 use Class::MakeMethods::Emulator::accessors( ... );

	 # Equivalent to use mcoder( ... );
	 use Class::MakeMethods::Emulator::mcoder( ... );

DESCRIPTION

       In several cases, Class::MakeMethods provides functionality closely equivalent to that of an existing module, and it is simple to map the
       existing module's interface to that of Class::MakeMethods.

       Class::MakeMethods::Emulator provides emulators for Class::MethodMaker, Class::Accessor::Fast, Class::Data::Inheritable, Class::Singleton,
       Class::Struct, accessors, and mcoder, each of which passes the original module's test suite, usually requiring only the addition of a a
       single line to each test, activating the emulation module.

       Beyond demonstrating compatibility, these emulators also generally indicate the changes needed to switch to direct use of
       Class::MakeMethods functionality, illustrate commonalities between the various modules, and serve as a source for new ideas that can be
       integrated into Class::MakeMethods.

SEE ALSO

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

       See Class::MakeMethods::Emulator::accessors, and accessors from CPAN.

       See Class::MakeMethods::Emulator::Struct, and Class::Struct from CPAN.

       See Class::MakeMethods::Emulator::AccessorFast, and Class::Accessor::Fast from CPAN.

       See Class::MakeMethods::Emulator::Inheritable, and Class::Data::Inheritable from CPAN.

       See Class::MakeMethods::Emulator::MethodMaker, and Class::MethodMaker from CPAN.

       See Class::MakeMethods::Emulator::Singleton, and Class::Singleton from CPAN.

       See Class::MakeMethods::Emulator::mcoder, and mcoder from CPAN.

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