Description : Copies the elements in the range, defined by [first, last), to another range beginning at passed argument, if the value satisfy specific criteria.
Example:
auto isOdd = [](int i) {
return ((i%2) == 1);
};
std::vector<int> origin {1, 2, 3};
std::vector<int> destination;
// Will copy from origin [begin, end), to destination
std::copy_if(origin.begin(), origin.end(), std::back_inserter(destination), isOdd);
// destination is now {1, 3}
for (auto value : destination) {
std::cout << value << " ";
}