Erm, actually, all STL implementations I've seen use a simple C-style array under the hood to store `std::array` data, not a much more complex tuple. But it doe

Erm, actually, all STL implementations I've seen use a simple C-style array under the hood to store `std::array` data, not a much more complex tuple. But it doesn't matter much in the context of the question: the whole point of `std::array` is to provide fixed inplace storage for the data, basically just a safe version of a C-array. Implementing it on top of dynamically sized vector, like the author did, is... just missing the whole idea. This thing was the first I noticed while looking at the sources... And I don't want to look any more further now.