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13. Classes, Objects, and Ties

Introduction

Constructing an Object
Destroying an Object
Managing Instance Data
Managing Class Data
Using Classes as Structs
Cloning Objects
Calling Methods Indirectly
Determining Subclass Membership
Writing an Inheritable Class
Accessing Overridden Methods
Generating Attribute Methods Using AUTOLOAD
Solving the Data Inheritance Problem
Coping with Circular Data Structures
Overloading Operators
Creating Magic Variables with tie
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Packages, Libraries, and Modules Database Access