libclass-data-inheritable-perl

Inheritable, overridable class data
Class::Data::Inheritable is for creating accessor/mutators to class
data. That is, if you want to store something about your class as a
whole (instead of about a single object). This data is then inherited
by your subclasses and can be overriden.
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For example:
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Pere::Ubu->mk_classdata('Suitcase');
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will generate the method Suitcase() in the class Pere::Ubu.
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This new method can be used to get and set a piece of class data.
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Pere::Ubu->Suitcase('Red');
$suitcase = Pere::Ubu->Suitcase;