Use std::uniform_int_distribution and define its range later

Question

I have problem where I want to create a std::uniform_int_distribution in a struct and then give its range later. Below is what I want.

#include          


        

Answer 1

You can just do

group.dis = std::uniform_int_distribution<>(0,19);

or

group.dis.param(std::uniform_int_distribution<>::param_type(0,19));

Another way would be to add a method to your struct

struct group_s {
    int k;
    std::uniform_int_distribution<> dis;
    void set(int a, int b) { dis = std::uniform_int_distribution<>(a,b); }
} group;


group.set(0,19);