Book Image

Advanced C++

By : Gazihan Alankus, Olena Lizina, Rakesh Mane, Vivek Nagarajan, Brian Price
5 (1)
Book Image

Advanced C++

5 (1)
By: Gazihan Alankus, Olena Lizina, Rakesh Mane, Vivek Nagarajan, Brian Price

Overview of this book

C++ is one of the most widely used programming languages and is applied in a variety of domains, right from gaming to graphical user interface (GUI) programming and even operating systems. If you're looking to expand your career opportunities, mastering the advanced features of C++ is key. The book begins with advanced C++ concepts by helping you decipher the sophisticated C++ type system and understand how various stages of compilation convert source code to object code. You'll then learn how to recognize the tools that need to be used in order to control the flow of execution, capture data, and pass data around. By creating small models, you'll even discover how to use advanced lambdas and captures and express common API design patterns in C++. As you cover later chapters, you'll explore ways to optimize your code by learning about memory alignment, cache access, and the time a program takes to run. The concluding chapter will help you to maximize performance by understanding modern CPU branch prediction and how to make your code cache-friendly. By the end of this book, you'll have developed programming skills that will set you apart from other C++ programmers.
Table of Contents (11 chapters)
6. Streams and I/O

Templates – More than Generic Programming

Templates can also deliver much more than just generic programming (a cookie cutter with types). In the case of generic programming, the template operates as a blueprint that cannot be changed and delivers the compiled version of the template for the specified type or types.

Templates can be written to provide specialization of a function or algorithm based on the types involved. This is known as template specialization and is not generic programming in the sense we previously used it. It can only be called generic programming when it makes certain types behave as we would expect them to do in a given context. It cannot be called generic programming when the algorithm that's used for all types is modified.

Examine the following sample of specialization code:

#include <iostream>

#include <type_traits>

template <typename T, std::enable_if_t<sizeof(T) == 1, int> = 0>

void print(T val)