::make_random_string

#include <random>
#include <string>
#include <utility>

template<typename URNG>
std::string make_random_string(std::size_t length, URNG&& generator) {

    std::uniform_int_distribution<int> distribution(0x21, 0x7E);
    std::string result;

    while(length) {

        result += distribution(std::forward<URNG>(generator));
        --length;

    }

    return result;

}