Meeting C++ 2025 - C++ common knowledge

Dawid Zalewski

On Day 2 at 14:30 (CET/Berlin) in Track B [Opal Room and online]

Let's face it, you can get by just fine in C++ without knowing what std::launder does or how to use parameter packs with std::index_sequence. However, if you consider yourself a well-rounded C++ programmer, you can't escape being familiar with the one-definition rule or understanding the deterministic object destruction guarantees. That's just C++ common knowledge. Yet, such foundational items are often overlooked and their details are glossed over. Unfortunately so. Let us take a step back and talk about the basics, digging deep into the core language. Let's start making the catalogue of the C++ common knowledge. Besides the topics already mentioned, we'll talk about the lookup rules, friends, initialization, member functions and others!

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