What are some advanced techniques for using vectors in C++?

What are some advanced techniques for using vectors in C++?

Advanced techniques for using vectors in C++ include using iterators, custom comparators, and leveraging algorithms from the STL.

Can you explain how to use iterators with vectors?

Sure! Iterators allow you to traverse the elements of a vector. You can use begin() and end() to get the start and end iterators.

What about using custom comparators?

Custom comparators can be used with the sort() function to define how elements should be ordered. You can create a function or a lambda expression.

Are there any performance considerations when using vectors?

Yes, vectors can be resized, but frequent resizing can lead to performance overhead. It's better to reserve space if you know the size in advance.

How do I handle exceptions when accessing vector elements?

You can use the at() method, which throws an out_of_range exception if the index is invalid, providing safer access than the operator[].