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

Chapter 2, Class and Function Templates

  1. A template is not a type; it is a Factory for many different types with similar structures. A template is written in terms of generic types; substituting concrete types for these generic types results in a type generated from the template.
  2. There are class, function, and variable templates. Each kind of template generates the corresponding entities—functions in the case of function templates, classes (types) from class templates, and variables from variable templates.
  3. Templates can have type and non-type parameters. Type parameters are types. Non-type parameters can be integral or enumerated values or templates (in the case of variadic templates, the placeholders are also non-type parameters).
  4. A template instantiation is the code generated by a template. Usually, the instantiations are implicit; the use of a template forces its instantiation. An explicit instantiation, without use, is also possible; it generates a type...