Book Image

C++ Fundamentals

By : Antonio Mallia, Francesco Zoffoli
Book Image

C++ Fundamentals

By: Antonio Mallia, Francesco Zoffoli

Overview of this book

C++ Fundamentals begins by introducing you to the C++ compilation model and syntax. You will then study data types, variable declaration, scope, and control flow statements. With the help of this book, you'll be able to compile fully working C++ code and understand how variables, references, and pointers can be used to manipulate the state of the program. Next, you will explore functions and classes — the features that C++ offers to organize a program — and use them to solve more complex problems. You will also understand common pitfalls and modern best practices, especially the ones that diverge from the C++98 guidelines. As you advance through the chapters, you'll study the advantages of generic programming and write your own templates to make generic algorithms that work with any type. This C++ book will guide you in fully exploiting standard containers and algorithms, understanding how to pick the appropriate one for each problem. By the end of this book, you will not only be able to write efficient code but also be equipped to improve the readability, performance, and maintainability of your programs.
Table of Contents (9 chapters)
C++ Fundamentals

Non-Type Template Parameters

We learned how templates allow you to provide the types as parameters and how we can make use of this to write generic code.

Templates in C++ have an additional feature—non-type template parameters.

A non-type template parameter is a template parameter that is not a type—it is a value.

We made use of such non-type template parameters many times when using std::array<int, 10>;.

Here, the second parameter is a non-type template parameter, which represents the size of the array.

The declaration of a non-type template parameter is in the parameter list of the template, but instead of starting with a typename keyword such as the type parameters, it starts with the type of the value, followed by the identifier.

There are strict restrictions on the types that are supported as non-type template parameters: they must be of integral type.

Let's examine the following example of the declaration of a non-type template parameter:

template<typename T, unsigned int size&gt...