Question

In C++, is there a way to call a function on each element of a vector, without using a loop running over all vector elements? Something similar to a ‘map’ in Python.

Answer 1

Yes: std::for_each.

#include <algorithm> //std::for_each

void foo(int a) {
    std::cout << a << "\n";
}

std::vector<int> v;

...

std::for_each(v.begin(), v.end(), &foo);