Removes the value at the front of the container. The stable version behaves the same, but guarantees that ranges iterating over the container are never invalidated.
Precondition: !empty
Complexity: O(1).
See Implementation
Removes the value at the front of the container. The stable version behaves the same, but guarantees that ranges iterating over the container are never invalidated.
Precondition: !empty
Complexity: O(1).