Random.h (C++11)

//based on Cheinan Marks talk at CPPCon2016: https://www.youtube.com/watch?v=4_QO1nm7uJs
#pragma once
#include <random>
class Random {
    static std::mt19937& rng() {
        static std::mt19937 u{};
        return u;
    }
public:
    static void randomize() {
        static std::random_device rd{};
        rng().seed(rd());
    }
    static unsigned char color() {//0-255 inclusive
        static std::uniform_int_distribution<> dist{0, 255};
        return static_cast<unsigned char>(dist(rng()));
    }
    static int getInt(int from, int thru) {//[from,trhu] (inclusive)
        static std::uniform_int_distribution<int> dist{};
        using parm_t = decltype(dist)::param_type;
        return dist(rng(), parm_t{ from, thru });
    }
    static float getFloat(float from = 0.0f, float upto = 1.0f) {// [from, upto) (exclusive)
        static std::uniform_real_distribution<float> dist{};
        using parm_t = decltype(dist)::param_type;
        return dist(rng(), parm_t{ from, upto });
    }
    static double getDouble(double from = 0.0, double upto = 1.0) {// [from, upto) (exclusive)
        static std::uniform_real_distribution<double> dist{};
        using parm_t = decltype(dist)::param_type;
        return dist(rng(), parm_t{ from, upto });
    }
    template<class T>
    static T getNumber(T min, T max) {
        static std::uniform_int_distribution<T> dist{};
        using parm_t = decltype(dist)::param_type;
        return dist(rng(), parm_t{ min, max });
    };
    static float getNumber(float from, float upto) {// [from, upto) (exclusive)
        return getFloat(from, upto);
    }
    static double getNumber(double from, double upto) {// [from, upto) (exclusive)
        return getDouble(from, upto);
    }
};