What are the best practices for using iterators with STL vectors in C++?

What are the best practices for using iterators with STL vectors in C++?

When using iterators with STL vectors, it's important to ensure that you don't go out of bounds. Always check the iterator against the vector's end().

Can you explain how to avoid common pitfalls when using iterators?

Certainly! One common pitfall is modifying the vector while iterating over it. This can invalidate iterators, leading to undefined behavior. Always avoid adding or removing elements during iteration.

What about using range-based for loops? Are they better?

Yes, range-based for loops are often safer and more concise. They automatically handle the iterators for you, reducing the risk of errors.

Are there performance considerations I should be aware of?

Absolutely! While iterators are generally efficient, be mindful of the vector's capacity. Frequent resizing can lead to performance hits, so reserve space if you know the size in advance.