Book Image

Hands-On Design Patterns with C++ (Second Edition) - Second Edition

By : Fedor G. Pikus
5 (1)
Book Image

Hands-On Design Patterns with C++ (Second Edition) - Second Edition

5 (1)
By: Fedor G. Pikus

Overview of this book

C++ is a general-purpose programming language designed for efficiency, performance, and flexibility. Design patterns are commonly accepted solutions to well-recognized design problems. In essence, they are a library of reusable components, only for software architecture, and not for a concrete implementation. This book helps you focus on the design patterns that naturally adapt to your needs, and on the patterns that uniquely benefit from the features of C++. Armed with the knowledge of these patterns, you’ll spend less time searching for solutions to common problems and tackle challenges with the solutions developed from experience. You’ll also explore that design patterns are a concise and efficient way to communicate, as patterns are a familiar and recognizable solution to a specific problem and can convey a considerable amount of information with a single line of code. By the end of this book, you’ll have a deep understanding of how to use design patterns to write maintainable, robust, and reusable software.
Table of Contents (26 chapters)
1
Part 1: Getting Started with C++ Features and Concepts
5
Part 2: Common C++ Idioms
10
Part 3: C++ Design Patterns
18
Part 4: Advanced C++ Design Patterns

Summary

We have examined a rather convoluted design pattern that combines both sides of C++—generic programming (templates) and object-oriented programming (inheritance). True to its name, the Curiously Recurring Template Pattern creates a circular loop, where the derived class inherits the interface and the implementation from the base class, while the base class has access to the interface of the derived class through the template parameters. CRTP has two main use modes—true static polymorphism, or static interface, where the object is primarily accessed as the base type, and expanding the interface, or delegation, where the derived class is accessed directly but the implementation uses CRTP to provide common functionality. The latter can vary from a simple addition of one or two methods to a complex task of composing the interfaces of derived classes from multiple building blocks or policies.

The next chapter introduces an idiom that makes use of the pattern we...