NAME

Object::groups - Pragma to implement group of properties

VERSION 2.40

Included in OOTools 2.21 distribution.

The latest versions changes are reported in the Changes file in this distribution.

The distribution includes:

Package::props: Pragma to implement lvalue accessors with options
* Package::groups: Pragma to implement groups of properties accessors with options
* Class::constr: Pragma to implement constructor methods
* Class::props: Pragma to implement lvalue accessors with options
* Class::groups: Pragma to implement groups of properties accessors with options
* Class::Error: Delayed checking of object failure
* Class::Util: Class utility functions
* Object::props: Pragma to implement lvalue accessors with options
* Object::groups: Pragma to implement groups of properties accessors with options

INSTALLATION

Prerequisites

    Perl version >= 5.6.1

CPAN

    perl -MCPAN -e 'install OOTools'

Standard installation

From the directory where this file is located, type:

    perl Makefile.PL
    make
    make test
    make install

DESCRIPTION

This pragma is very similar to the "Class::groups" pragma: the main difference is the underlying variable that holds the value, which is a global hash in the caller package instead in the class. For example:

   package BaseClass;
   use Package::groups 'a_package_group';
   use Class::groups 'a_class_group';
   
   package SubClass;
   our @ISA = 'BaseClass';
   
   # underlaying hash for accessor 'a_package_group' is
   # %BaseClass::a_package_group
   # underlaying hash for accessor 'a_class_group' is
   # %SubClass::a_class_group;

This might seem a subtle difference, but the possible usage in inherited classes makes a big difference.

While you can also call a package group accessor by statically using the implementing package name (e.g. "BaseClass-"a_group>), regardless the subclass that uses it, overridden package accessor groups don't inherit defaults as Class accessors do.

See the documentation of the accessor groups in Class::groups for all the details.

SUPPORT and FEEDBACK

If you need support or if you want just to send me some feedback or request, please use this link: http://perl.4pro.net/?Object::groups.

AUTHOR and COPYRIGHT

CREDITS

Thanks to Juerd Waalboer (http://search.cpan.org/author/JUERD) that with its Attribute::Property inspired the creation of this distribution.

POD ERRORS

Hey! The above document had some coding errors, which are explained below:

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