Tutorial: Encapsulating Algorithms with the Template Method Design Pattern:

Encapsulating Algorithms with the Template Method Design Pattern

This article, the sixth in a series about design patterns, introduces the Template Method design pattern, one of the 23 design patterns defined in the legendary 1995 book DDesign Patterns—Elements of Reusable Object-Oriented Software. The authors of this book, Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides, are known affectionately as the Gang of Four (GoF).

Design Patterns

The GoF book's 23 design patterns fall into three categories:

A creational pattern abstracts the instantiation process.
A structural pattern groups objects into larger structures.
A behavioral pattern defines better communication among objects.

The Template Method design pattern fits into the behavioral category.

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