SFINAE is a somewhat esoteric feature of the C++ standard—it is complex and has many subtle details. While it is usually mentioned in the context of manual control of the overload resolution, its main purpose is actually not to enable very elaborate guru-level code, but to make the regular (automatic) overload resolution work the way the programmer intended. In this role, it usually works exactly as desired and with no additional effort—in fact, the programmer usually does not need to even be aware of this feature. Most of the time, when you write a generic overload and a special overload for the pointers, you expect the latter not to be called for types that are not pointers. Most of the time, you probably don't even pause to notice that the rejected overload would be ill-formed—who cares, it's not supposed to be used. But to find out that...
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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