How do I compare iterators in C++11's std::list?

How do I compare iterators in C++11's std::list?

In C++11, you can compare iterators using relational operators like ==, !=, <, >, <=, and >=. For std::list, iterators are bidirectional.

Can you give me an example of comparing two iterators?

Sure! Here's a simple example:

std::list<int> myList = {1, 2, 3};
auto it1 = myList.begin();
auto it2 = myList.end();
if (it1 != it2) {
    std::cout << "Iterators are not equal.";
}

What happens if I compare an iterator to the end iterator?

Comparing an iterator to the end iterator will return true if the iterator is at the end of the list, indicating it points past the last element.

Are there any performance considerations when using iterators?

Yes, while iterators are generally efficient, be mindful of operations that may invalidate them, such as inserting or deleting elements from the list.