Functional programming is becoming a required skill for all programmers, and for good reason. The functional style of programming lets you write more concise code which tends to have fewer bugs. It allows you to decompose your programs into smaller, highly reusable components, without putting conceptual limits on how the software should be modularized. FP makes software development easier and software more correct and robust. These techniques can be used as a complement to those from other programming paradigms, for example OOP, which makes FP a great fit for C++ as the most popular multi-paradigm language.

Functional Programming in C++ teaches developers the practical side of functional programming and what tools C++ provides to develop software in the functional style. This practical guide starts with an introduction to functional programming that contrasts FP with the imperative style of programming. This book is full of helpful diagrams that help you to understand FP concepts and begin to think functionally. You'll learn, and with the help of lots of code examples, try out FP concepts like monads, lazy evaluation, and immutable data structures. The last few chapters take you deeper into real-world FP, covering functional design for concurrent and distributed systems as well as testing and debugging.

Ivan Čukić has been teaching modern C++ techniques and functional programming at the Faculty of Mathematics in Belgrade for 6 years and has been using C++ for more than 15 years. He has been researching functional programming in C++ before and during his PhD studies, and uses the techniques in real-world projects. He is one of the core developers in KDE, the largest free/libre open source C++ project.