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

Coroutine patterns in C++

Coroutines are a very recent addition to C++: they were introduced in C++20, and their present state is a foundation for building libraries and frameworks as opposed to features you should use in the application code directly. It is a complex feature with many subtle details, and it would take an entire chapter to explain what it does (there is a chapter like that in my book The Art of Writing Efficient Programs). Briefly, coroutines are functions that can suspend and resume themselves. They cannot be forced to suspend, a coroutine continues to execute until it suspends itself. They are used to implement what is known as cooperative multitasking, where multiple streams of execution voluntarily yield control to each other rather than being forcibly preempted by the OS.

Every execution pattern we saw in this chapter, and many more, can be implemented using coroutines. It is, however, too early to say whether this is going to become a common use of coroutines...