I learned about the new range API of std::optional from Steve Downey at CppCon 2025 during his talk about std::optional<T&>. To be honest, I found the idea quite strange at first. I wante...

If you’re a regular reader of my blog, you know I’ve been sharing what I learn about new C++ language and library features ever since C++20. You probably also read my CppCon 2025 Trip Report. And t...

A dream came true. My C++ conference journey started with CppCon. Well, almost. Back in 2019, my senior manager told me I would travel to the USA for a week to attend CppCon. In the end, cost-cutti...

Over the last two weeks, we explored different implementations of the observer pattern in C++. We began with a very simple example, then evolved toward a more flexible, template- and inheritance-ba...

Last week, we took the observer pattern from a very simple example and evolved it into a more flexible, template-based implementation in C++. We ended up with abstracted publishers and subscribers,...

The goal of this mini-series is to explore the Observer Design Pattern in C++, walking through different implementations and weighing their pros and cons. First, let’s briefly recap what the obser...

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...