Alexandru Bolboaca - Hands-On Functional Programming with C++: An effective guide to writing accelerated functional code using C++17 and C++20

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With 20 years' experience in the software development industry, Alexandru Bolboaca has gone from being a junior C++ programmer to a technical lead and software architect, before becoming a technical coach and trainer. He has extensive experience in helping customers to improve the way they work, as well as their code and approach to testing. He is also the author of Usable Software Design, and the co-author of Coderetreat.

Trevor Hickey is a software engineer at Uber. He holds a bachelor's degree in computer science from Edinboro University of Pennsylvania. He has experience in literature peer review and specializes in computational pasigraphy. His research interests include pragmatics and relevance theory.

Will Brennan is a C++/Python software engineer based in London, with experience of working on high-performance image processing and machine learning applications.

Ryan Riley has been involved in the futures and derivatives industry for almost 20 years. He received a bachelor's degree and a master's degree from DePaul University in applied statistics. Doing his course work in math meant that he had to teach himself how to program, thereby forcing him to read more technical books on programming than he would otherwise have done. Ryan has worked with numerous AI libraries in various languages, and is currently using the Caffe2 C++ library to develop and implement futures and derivatives trading strategies at PNT Financial.

Andreas Oehlke is a professional full-stack software engineer. He holds a bachelor's degree in computer science and loves to experiment with software and hardware. His trademark has always been his enthusiasm and affinity for electronics and computers. His hobbies include game development, building embedded systems, sports, and making music. He currently works full time as a senior software engineer for a German financial institution. He has also worked as a consultant and game developer in San Francisco, CA. He is also the author of the book, Learning LibGDX Game Development.

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Welcome to a hands-on tour of functional programming in C++! This book is about an old idea, that is, functional programming, and a classic programming language, that is, C++, finally uniting forces.

Functional programming has been around since the 1950s; however, due to its mathematical underpinnings, it has been of limited interest to mainstream software development for many years. With the advent of multicore CPUs and big data leading to the need for parallelization, and with programming language designers becoming more interested in immutability and lambdas, functional programming concepts have been gradually introduced in all major programming languages, including C#, Java, PHP, JavaScript, Python, and Ruby. C++ has never been far from functional programming, with features such as function pointers, functors, and the algorithms from STL allowing many programmers to take advantage of certain constructs. However, starting with C++ 11, we see the introduction of lambdas, and of higher-order functions such as all_of, any_of, and none_of. In C++ 17, we see more progress, with the introduction of map (implemented as transform). Additionally, the features coming in C++ 20 are very exciting; for example, the ranges library, which allows composable, lightweight, and lazily evaluated transformations, is a great addition to the standard.