Use of for_each on map elements

Question

I have a map where I\'d like to perform a call on every data type object member function. I yet know how to do this on any sequence but, is it possible to do it on an associativ

Answer 1

Here is an example of how you can use for_each for a map.

std::map map;

map.insert(std::pair(1, 2));
map.insert(std::pair(2, 4));
map.insert(std::pair(3, 6));

auto f = [](std::pair it) {std::cout << it.first + it.second << std::endl; };
std::for_each(map.begin(), map.end(), f);