C ++ learning: Container details (2), container details

C ++ learning: Container details (2), container details

From yesterday to now, I still stayed on the study of containers. Now I am writing routine code more easily. It seems that I still need to practice more to write code.

After one day of study, I have some knowledge points that make sense:

(1) When the elements in the container are deleted, the return values of the pop_front and pop_back functions are not the values of the elements to be deleted, but void, that is, the empty data type. If you want to return the values of the deleted elements, the front and back functions must be called before the elements are deleted.

(2) Delete an element and use erase to return an iterator pointing to the element after the deleted element or deleted element segment.

(3) The container capacity is larger than the size.