Book Image

Modern C++: Efficient and Scalable Application Development

By : Richard Grimes, Marius Bancila
Book Image

Modern C++: Efficient and Scalable Application Development

By: Richard Grimes, Marius Bancila

Overview of this book

C++ is one of the most widely used programming languages. It is fast, flexible, and used to solve many programming problems. This Learning Path gives you an in-depth and hands-on experience of working with C++, using the latest recipes and understanding most recent developments. You will explore C++ programming constructs by learning about language structures, functions, and classes, which will help you identify the execution flow through code. You will also understand the importance of the C++ standard library as well as memory allocation for writing better and faster programs. Modern C++: Efficient and Scalable Application Development deals with the challenges faced with advanced C++ programming. You will work through advanced topics such as multithreading, networking, concurrency, lambda expressions, and many more recipes. By the end of this Learning Path, you will have all the skills to become a master C++ programmer. This Learning Path includes content from the following Packt products: • Beginning C++ Programming by Richard Grimes • Modern C++ Programming Cookbook by Marius Bancila • The Modern C++ Challenge by Marius Bancila
Table of Contents (24 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
12
Math Problems
13
Language Features
14
Strings and Regular Expressions
15
Streams and Filesystems
16
Date and Time
17
Algorithms and Data Structures
Index

Using function parameters


When a function is called, the compiler checks all the overloads of the function to find one that matches the parameters in the calling code. If there is no exact match then standard and user-defined type conversions are performed, so the values provided by the calling code may be a different type from the parameters.

By default, parameters are passed by value and a copy is made, which means that the parameters are treated as local variables in the function. The writer of the function can decide to pass a parameter by reference, either through a pointer or a C++ reference. Pass-by-reference means that the variable in the calling code can be altered by the function, but this can be controlled by making the parameters const, in which case the reason for pass-by-reference is to prevent a (potentially costly) copy being made. Built-in arrays are always passed as a pointer to the first item to the array. The compiler will create temporaries when needed. For example, when...