C++ has many dark corners and many caveats that can cause you to scratch your head in confusion. One of the issues we had until C++17 was the evaluation order of expressions. In this blog post, I’ll show you the new rules that we got in C++17 that made this complicated term much simpler and practical.

At C++Stories (and in my C++17 book) you can find several articles on Parallel Algorithms introduced in C++17. The examples included in those posts were usually relatively straightforward. How about writing something larger? In this text, you’ll see how to build a tool that works on CSV files, parses lines into sales records and then performs calculations on the data.

I’m happy to announce that after few months of work, the C++ Lambda Story book got translation into Spanish! Have a look at the background story and learn more about Lambdas :) This post is possible with the effort of Javier Estrada. Javier is a software developer living in sunny Southern California, and while he has flirted with Java and Python in the past, his true love is C++.

In April, we got a new book - from two Polish authors - Piotr and Adrian - on C++ Software Architecture. This one is fascinating and refreshing. While it won’t teach you all the latest C++ features or low-level tricks in our favorite language, it will move you to a higher level with architecture, building, patterns, design, and development for the cloud.

The work on C++23 continues! Without the face-to-face meetings, the Committee gathers online and discusses proposals and new additions to the language. See my latest report on what changed in C++ in April, May, and June 2021. Let’s start! Disclaimer: the view presented here is mine and does not represent the opinion of the ISO C++ Committee.

More than a year ago I started my Patreon page! It was an experiment, and I’m pleased that it has a lot of benefits. In this short blog post, I’d like to make a small summary, share my thoughts and plans for the next year. You can also learn how to get “one year” of my extra C++ content!

std::visit from C++17 is a powerful utility that allows you to call a function over a currently active type in std::variant. In this post, I’ll show you how to leverage all capabilities of this handy function: the basics, applying on multiple variants, and passing additional parameters to the matching function.

Back in 2016, an intriguing article appeared on Reddit: “Do Experienced Programmers Use Google Frequently?”. The author discussed if expert programmers use google more often than novice coders. He mentioned that using google is a good thing. It helps to find the best solutions, validate ideas, speed the development. Google nowadays seems to be a crucial part of any developer toolbox.

This blog post will show you how to create a robust and scalable logging library using lots of Modern C++ techniques. The author successfully used this code on Arduino embedded environment and various other production areas. Let’s dive right in. Written by Stephen Dolley Stephen works with C++ commercial and government development teams to upgrade their skills and improve the expressiveness and robustness of their code.

With C++17 we get another facility to handle the conversion between text and numbers. Why should we care about the new routines? Are they better in any way? Before C++17 C++, before C++17, offered several options when it comes to string conversion: sprintf / snprintf sscanf atol strtol strstream stringstream to_string stoi and similar functions And with C++17 you get another option: std::from_chars!

In this post, I’ll show you how to use the newest, low-level, conversion routines form C++17. With the new functionality, you can quickly transform numbers into text and have super performance compared to previous techniques. Before C++17 Until C++17, we had several ways of converting numbers into strings: sprintf / snprintf stringstream to_string itoa and 3rd-party libraries like boost - lexical cast And with C++17 we get another option: std::to_chars (along with the corresponding method from_chars) !

The problem: a library function offers several overloads, but depending on the implementation/compiler, some of the overloads are not available. How to check the existence of an overload? And how to provide a safe fallback? In this article, I’ll show you a background “theory” and one case - std::from_chars that exposes full support for numbers or only integer support (in GCC, Clang).