Creational design patterns — Singleton, Factory, Abstract Factory, Builder, Prototype. How to abstract object construction.

Creational patterns deal with object construction. They abstract the instantiation process so client code doesn't depend on concrete classes.

At most one instance, globally accessible

Encapsulate object creation behind an interface

Create families of related objects together

Construct complex objects step by step

Clone existing instances instead of constructing fresh

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Creational Patterns