How to create map in c++ and be able to search for function and call it?

Question

I\'m trying to create a map of string and method in C++, but I don\'t know how to do it. I would like to do something like that (pseudocode):

map

        

Answer 1

//pick one
typedef float (*func_type_1)(float);
typedef boost::function func_type_2;

std::map fm;
fm["sin"] = &Math::sin;
fm["cos"] = &Math::cos;

auto f = fm[str];
result = f(42);