Whether you’re in a coding interview or writing production code, you’ll eventually face the question: What’s the right way to look up values in a std::map or std::unordered_map? For simplicity, we’...

Last week, we discussed why we should sometimes use remove_cvref_t on our template parameters before applying concepts to them. We also saw that the solution is not super readable because we lose a...

This article was inspired by Mateusz Pusz’ The 10 Essential Features for the Future of C++ Libraries talk at C++ on Sea 2025. Let’s talk about templates, constraints, and concepts. We’ll start wi...

Maybe the title is a bit clickbaity — sorry for that. But I’ve seen many people unintentionally introduce undefined behaviour (UB) into their code through Boost unit tests. Sure, it’s “only” in the...

Last week, we discussed how to write our own formatter and finished with a relatively simple solution for printing a struct called ProgrammingLanguage. Today, we’ll take it to the next level. Add ...

I recently published two posts about how C++26 improves std::format and the related facilities. (If you missed them, here are Part 1 and Part 2). Now it’s time to explore how you can format your ow...

In Part 1, we explored the improvements C++26 brings to std::format — from better to_string behavior to compile-time safety checks. In this part, we look at runtime formatting, defect fixes, and su...

C++26 brings a series of improvements to std::format, continuing the work started in C++20 and refined in C++23. These changes improve formatting consistency, runtime safety, and user ergonomics. T...

Another year, another trip report from C++ On Sea! First, a heartfelt thank-you to the organizers for inviting me to speak, and an equally big thank-you to my wife for taking care of the kids whil...

I wrote a couple of times about dynamic_cast and I discouraged you from using it. In general, it makes code worse in terms of readability. When you get rid of dynamic_cast, either via self-discipli...