What are the differences between vector iterators in C++11?

What are the differences between vector iterators in C++11?

In C++11, vector iterators can be categorized into three types: begin(), end(), and rbegin(), rend(). The begin() and end() iterators allow forward traversal, while rbegin() and rend() enable reverse traversal.

Can you explain how to use these iterators in a loop?

Certainly! You can use a range-based for loop with begin() and end() like this: for (auto& element : myVector) { /* process element */ }. For reverse iteration, use for (auto it = myVector.rbegin(); it != myVector.rend(); ++it) { /* process *it */ }.

What are the advantages of using these iterators?

Using iterators provides a more abstract way to traverse containers, making your code cleaner and less error-prone. They also allow for easy integration with algorithms from the STL.

Are there any performance differences between these iterators?

Generally, the performance is similar, but reverse iterators may have slight overhead due to additional pointer manipulation. However, this is usually negligible in most applications.