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Designing object-oriented software is hard, and designing reusable object-oriented software is even harder. You must find pertinent objects, factor them into classes at the right granularity, …

Content preview from Design Patterns: Elements of Reusable Object-Oriented Software

A class creational pattern uses inheritance to vary the class that’s instantiated, whereas an object creational pattern will delegate instantiation to another object. Creational patterns become …

These patterns characterize complex control flow that’s difficult to follow at run-time. They shift your focus away from flow of control to let you concentrate just on the way objects are …

Design Patterns: Elements of Reusable Object-Oriented Software Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides

But the design patterns in particular use more formal notations to denote relationships and interactions between classes and objects. This appendix describes these notations in detail.

Content preview from Design Patterns: Elements of Reusable Object-Oriented Software

This appendix documents the foundation classes we use in the C++ sample code of several design patterns. We’ve intentionally kept the classes simple and minimal.

Content preview from Design Patterns: Elements of Reusable Object-Oriented Software