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In C++ 23 we finally got std::flat_* containers. Such containers have been existing for a long time, but having them as a part of the standard library simplifies access to these data structures.

This talk might be interesting if you want to know:
- the difference between flat_* and regular containers
- when to use them
- about the performance and memory impacts

I'm also going to share some actual usage cases and talk a little bit about common mistakes.