Fast way to implement pop_front to a std::vector

Question

I\'m using some classes and several utility methods that use std:: vector.

Now I need to use each frame a pop_front - push_back method on one of those classes (but they

Answer 1

if you just try to erase the first element then in the function use:

if (my_vector.size()){ //check if there any elements in the vector array
    my_vector.erase(my_vector.begin()); //erase the firs element
}

if you want to emulate pop front for the entire vector array ( you want to keep pop out every element from start to end) , i suggest on:

reverse(my_vector.begin(),my_vector.end());  // reverse the order of the vector array
my_vector.pop_back();   // now just simple pop_back will give you the results