C++: std::array vs std::vector

What are the main differences between std::array and std::vector in C++?

The main differences are that std::array has a fixed size determined at compile time, while std::vector can change size dynamically.

When should I use std::array instead of std::vector?

Use std::array when the size is known and constant, as it can offer better performance and lower memory overhead.

Are there any performance implications when using std::vector?

Yes, std::vector may incur overhead due to dynamic memory allocation and resizing, which can affect performance in tight loops.

Can std::vector store different data types?

No, std::vector can only store elements of the same type. For different types, consider using std::variant or std::any.