Overview

Do you ever feel like you're fighting your own code? You spend hours chasing down bugs caused by state that changed unexpectedly. You approach multi-threading with a sense of dread, armed with a complex arsenal of locks and mutexes, hoping to avoid the next race condition. Your code works, but it feels fragile, complex, and difficult to reason about. What if there was a better way? What if you could write code where bugs related to mutable state simply... don't exist? Imagine building complex concurrent applications without ever writing a single explicit lock. Imagine transforming tangled, nested logic into clean, readable pipelines that tell a clear story. This isn't a fantasy. This is the promise of the functional paradigm, and modern C++ has given you all the tools you need to make it a reality. This book is the story of that transformation. It's the story of how you, an intermediate C++ developer, can shift your perspective and learn to build systems not by managing complexity, but by eliminating it at its source. It's time to stop fighting and start composing. What's InsideThis book is a comprehensive, practical journey packed with hands-on examples and detailed explanations. You will learn to: Master Functions as First-Class Citizens: Go beyond just using lambdas and learn to store, pass, and manipulate behavior as data. Embrace Immutability and Purity: Discover the mindset that eliminates entire classes of bugs and makes your code easier to reason about. Build Powerful Pipelines with C++20/23 Ranges: Unlock the most transformative feature in modern C++, allowing you to write lazy, efficient, and declarative data-processing code. Handle Errors without Exceptions: Learn to use std:: optional and std:: variant to create safe, explicit, and composable error-handling strategies. Write Fearless Concurrent Code: Understand how functional principles fundamentally simplify concurrency, enabling you to build parallel applications with confidence. Demystify Template Metaprogramming: See how compile-time programming is the ultimate form of pure FP, allowing you to catch errors and perform calculations before your program even runs. Who It's Meant ForThis book is written for you, the intermediate C++ developer. You're comfortable with the basics of C++11 and C++14, like auto, smart pointers, and basic lambdas. You have some experience building applications, but you know there's a more modern, robust way to write code. You are ready to level up your skills, embrace a new way of thinking, and become a master of modern C++. Stop wrestling with complexity. Start building elegant, robust, and modern C++ applications. The journey from imperative programmer to functional architect begins now. This book is your guide, your mentor, and your toolkit. Unlock the power of functional C++, and change the way you write software forever. Get your copy and begin your transformation today!

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