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
About Packt
Math Problems
Language Features
Strings and Regular Expressions
Streams and Filesystems
Date and Time
Algorithms and Data Structures

Using lambdas with standard algorithms

One of the most important modern features of C++ is lambda expressions, also referred to as lambda functions or simply lambdas. Lambda expressions enable us to define anonymous function objects that can capture variables in the scope and be invoked or passed as arguments to functions. Lambdas are useful for many purposes, and in this recipe, we will see how to use them with standard algorithms.

Getting ready

In this recipe, we discuss standard algorithms that take an argument that is a function or predicate applied to the elements it iterates through. You need to know what unary and binary functions are and what predicates and comparison functions are. You also need to be familiar with function objects because lambda expressions are syntactic sugar for function objects.







How to do it...

You should prefer to use lambda expressions to pass callbacks to standard algorithms instead of functions or function objects:

  • Define anonymous lambda expressions in...