c++: storing some structured data containing diffrent datatypes in a single entity

Question

i a bunch of enumerte data which are a name and a function (pointer to it) related to function. how to store them in a single entity for example an array or vector

i want something like this in python:

a = [["foo",foofunc]["bar",barfunk]]

or this in js:

let a = {}
a["foo"] = foofunc

it doesn't matters if name and the function are not at the same level. i just want the function to be accessible through the name.

Answer 1

I think you're looking for a vector of pair<std::string, void (*)() as shown below:

#include <iostream>
#include <utility>
#include <string>
#include <vector>
void foofunc()
{
    std::cout<<"foofunc called"<<std::endl;
    //do something here 
}
void barfunc()
{
    std::cout<<"barfunc called"<<std::endl;
    //do something here 
}
int main()
{
    //create a vector of pair of std::string and pointer to function with no parameter and void return type
    std::vector<std::pair<std::string, void (*)()>> a;
    
    //add elements into the vector
    a.push_back({"foo", &foofunc});
    a.push_back({"bar", &barfunc});
    
    //lets try calling the functions inside the vector of pairs
    a[0].second();//calls foofunc()
    
    a[1].second(); //calls barfunc()
    return 0;
}

The output of the above program can be seen here.