Book Image

Modern C++ Programming Cookbook

By : Marius Bancila
Book Image

Modern C++ Programming Cookbook

By: Marius Bancila

Overview of this book

C++ is one of the most widely used programming languages. Fast, efficient, and flexible, it is used to solve many problems. The latest versions of C++ have seen programmers change the way they code, giving up on the old-fashioned C-style programming and adopting modern C++ instead. Beginning with the modern language features, each recipe addresses a specific problem, with a discussion that explains the solution and offers insight into how it works. You will learn major concepts about the core programming language as well as common tasks faced while building a wide variety of software. You will learn about concepts such as concurrency, performance, meta-programming, lambda expressions, regular expressions, testing, and many more in the form of recipes. These recipes will ensure you can make your applications robust and fast. By the end of the book, you will understand the newer aspects of C++11/14/17 and will be able to overcome tasks that are time-consuming or would break your stride while developing.
Table of Contents (19 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Limits and other properties of numeric types


Sometimes, it is necessary to know and use the minimum and maximum values representable with a numeric type, such as char, int, or double. Many developers are using standard C macros for this, such as CHAR_MIN/CHAR_MAX, INT_MIN/INT_MAX, or DBL_MIN/DBL_MAX. C++ provides a class template called numeric_limits with specializations for every numeric type that enables you to query the minimum and maximum value of a type, but is not limited to that and offers additional constants for type properties querying, such as whether a type is signed or not, how many bits it needs for representing its values, for floating point types whether it can represent infinity, and many others. Prior to C++11, the use of numeric_limits<T> was limited because it could not be used in places where constants were needed (examples can include the size of arrays and switch cases). Due to that, developers preferred to use the C macros throughout their code. In C++11, that...