Thread-safety of writing a std::vector vs plain array

Question

I\'ve read on Stackoverflow that none of the STL containers are thread-safe for writing. But what does that mean in practice? Does it mean I should store writab

Answer 1

The main thing it means is that if you have multiple threads accessing the vector, you can't depend on C++ to keep you from corrupting the data structure with multiple concurrent writes. So you need to use some kind of guard. On the other hand, if your program doesn't use multiple threads, as your examples don't seem to, you're perfectly fine.