c++随机字符串生成

#include <iostream>
#include <random>
#include <ctime>
#include <chrono>

namespace ShellRandom {
    static std::uniform_int_distribution<int> diProbability_;
    static std::default_random_engine dre_;

    template<class T>
    T DiRandom(T minT, T maxT) ;
    template<> int DiRandom<int>(int minT, int maxT) ;
    void DiRandomSeed(std::default_random_engine::result_type seed) ;
}
std::uniform_int_distribution<int> diProbability_;
std::default_random_engine dre_(std::default_random_engine::default_seed);
namespace ShellRandom {
    template<class T>
    T DiRandom(T minT, T maxT) {
        std::uniform_int_distribution<T> di(minT, maxT);
        return di(dre_);
    }
    template<>
    int DiRandom<int>(int minT, int maxT) {
        diProbability_.param(std::uniform_int_distribution<int>::param_type(minT, maxT));
        return diProbability_(dre_);
    }
    void DiRandomSeed(std::default_random_engine::result_type seed) {
        dre_.seed(seed);
    }

}

int main() {
    std::string str;
    str.reserve(256);

    //  可以用时间戳代替
    ShellRandom::DiRandomSeed(1594285196729786);
    for (int i = 0; i < 256; ++i) {
        char r = ShellRandom::DiRandom<char>(33, 126); // 指定字符生成范围
        str.append(  1, r);
    }
    std::cout << str;

    return 0;
}