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.

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).

Do you know how many ways we can implement a filter function in C++? While the problem is relatively easy to understand - take a container, copy elements that match a predicate and the return a new container - it’s good to exercise with the Standard Library and check a few ideas.

A single-precision floating-point number is represented by 32 bits and hides various wonderful encoding techniques. However, some of those tricks might cause some imprecise calculations so it’s crucial to know how to work with those numbers. Let’s have a look at three common misconceptions. This is a guest post from Adam Sawicki

Two weeks ago, 20th May, I had a pleasure to talk about filtering elements on our Cracow C++ User Group online meeting. Here are the slides and additional comments from the presentation. Finally Restarted   After a few months of break, we finally restarted our Cracow’s C++ group! Thus far we had two presentations in 2021:

C++ Software Security Sins   In the world of software development, we are up against new cybersecurity threats each day, and the risks and consequences of un-secure software are too significant to be unaware of. Let’s review some common security threats that might lurk in our C/C++ code. This article is an adapted version of the presentation given by Mary Kelly, supported by Embarcadero.

Before you start implementing your custom concepts, it’s good to review some goodies in the Standard Library. There’s a high chance that there’s already a predefined concept for you. Today let’s have a look at concepts related to callable objects. Where to find them   You can find most of the predefined concepts in the <concepts> header.

According to the recent popular paper “There is plenty of room at the top”1, SW tuning will be one of the key drivers for performance gains in the near future. The growth of a single-threaded performance of modern HW is slowing down, that’s why SW tuning will become more important than it has been for the last 40 years.