The Template Method pattern is a common way to implement an algorithm whose overall structure is pre-determined, but some of the details of the implementation need to be customized. If you are thinking about a solution that goes something like this—first, we do X, then Y, then Z, but how exactly we do Y depends on the data we process—you are thinking about the Template Method. As a pattern that allows the behavior of the program to change dynamically, the Template Method is somewhat similar to the strategy pattern. The key difference is that the strategy changes the entire algorithm at runtime, while the Template Method lets us customize specific parts of the algorithm. This section deals with the latter, while we have a separate Chapter 16, Policy-Based Design, dedicated to the former.
Hands-On Design Patterns with C++
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Hands-On Design Patterns with C++
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Overview of this book
C++ is a general-purpose programming language designed with the goals of efficiency, performance, and flexibility in mind. 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.
The focus of this book is on the design patterns that naturally lend themselves to the needs of a C++ programmer, and on the patterns that uniquely benefit from the features of C++, in particular, the generic programming. Armed with the knowledge of these patterns, you will spend less time searching for a solution to a common problem and be familiar with the solutions developed from experience, as well as their advantages and drawbacks. The other use of design patterns is as a concise and an efficient way to communicate. A pattern is a familiar and instantly recognizable solution to specific problem; through its use, sometimes with a single line of code, we can convey a considerable amount of information. The code conveys: "This is the problem we are facing, these are additional considerations that are most important in our case; hence, the following well-known solution was chosen."
By the end of this book, you will have gained a comprehensive understanding of design patterns to create robust, reusable, and maintainable code.
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Hands-On Design Patterns with C++
Table of Contents (21 chapters)
Preface
Free Chapter
An Introduction to Inheritance and Polymorphism
Class and Function Templates
Memory Ownership
Swap - From Simple to Subtle
A Comprehensive Look at RAII
Understanding Type Erasure
SFINAE and Overload Resolution Management
The Curiously Recurring Template Pattern
Named Arguments and Method Chaining
Local Buffer Optimization
ScopeGuard
Friend Factory
Virtual Constructors and Factories
The Template Method Pattern and the Non-Virtual Idiom
Singleton - A Classic OOP Pattern
Policy-Based Design
Adapters and Decorators
The Visitor Pattern and Multiple Dispatch
Assessments
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