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Debunking C++ Myths

Debunking C++ Myths

By : Alexandru Bolboacă, Ferenc-Lajos Deák
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Debunking C++ Myths

Debunking C++ Myths

By: Alexandru Bolboacă, Ferenc-Lajos Deák

Overview of this book

Think you know C++? Think again. For decades, C++ has been clouded by myths and misunderstandings—from its early design decisions to misconceptions that still linger today. Claims like "C++ is too hard to learn" or "C++ is obsolete" are often rooted in some truth, but they are outdated and fail to capture the language’s ongoing evolution and modern capabilities. Written by industry veterans with over 40 years of combined experience, this book uncovers the myths, exploring their origins and relevance in the context of today’s C++ landscape. It equips you with a deeper understanding of advanced features and best practices to elevate your projects. Each chapter tackles a specific misconception, shedding light on C++'s modern features, such as smart pointers, lambdas, and concurrency. You’ll learn practical strategies to navigate common challenges like code portability and compiler compatibility, as well as how to incorporate modern best practices into your C++ codebase to optimize performance and future-proof your projects. By the end of this book, you’ll have a comprehensive understanding of C++'s evolution, equipping you to make informed decisions and harness its powerful features to enhance your skills, coding practices, and projects.
Table of Contents (15 chapters)
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Functional programming to the rescue!

As we’ve seen, one of the problems with parallel and concurrent tasks is the shared access to resources. Functional programming, in its pure form, solves this out of the box through immutability. Since everything is immutable by default, and since any change to a value is made by pointing to a changed value instead of modifying the initial one, threads are never at risk of modifying data used by other threads. We discussed how to achieve this when we discussed the different paradigms available in C++.

But there’s more: functional programming offers us parallelizable algorithms out of the box. The C++ standardization committee recognized this when introducing functional algorithms along with an execution policy that allows you to run operations on collections in parallel.

Let’s look at a simple example: we want to compute the sum of squares of the values in a collection. The functional version of this type of algorithm...

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