Well-written code is easier to test and reuse, easier to parallelize, and less prone to errors. Mastering functional programming techniques will help you write code that meets the requirements of modern applications, it is easier to express complex program logic, gracefully handle errors and elegantly design parallel algorithms. The C++ language supports functional programming using templates, lambda expressions and its other basic capabilities, as well as algorithms from the STL library. Functional C++ programming will help you unlock your functional thinking abilities by showcasing a new perspective on C++ programming.