What are the best practices for using std::vector in C++?

What are the best practices for using std::vector in C++?

Some best practices include using reserve() to avoid reallocations, and using emplace_back() for efficiency.

Why should I use reserve() before adding elements?

Using reserve() allocates memory in advance, reducing the number of reallocations and improving performance.

Are there any performance considerations I should be aware of?

Yes, avoid frequent insertions in the middle of the vector, as it can lead to costly element shifts.

What about using std::vector with custom objects?

When using std::vector with custom objects, ensure you implement move semantics and copy constructors for efficiency.