How do I store a function to a variable?

Question

I think they are called functors? (it\'s been a while)

Basically, I want to store a pointer to a function in a variable, so I can specify what function I want to use

Answer 1

You could also use function either from the c++0x or from boost. That would be

boost::function

and then use bind to bind your function to this type.

Have a look here and here

Ok here would be a example. I hope that helps.

int MyFunc1(int i)
{
    std::cout << "MyFunc1: " << i << std::endl;
    return i;
}

int MyFunc2(int i)
{
    std::cout << "MyFunc2: " << i << std::endl;
    return i;
}

int main(int /*argc*/, char** /*argv*/)
{
    typedef boost::function Function_t;

    Function_t myFunc1 = boost::bind(&MyFunc1, _1);
    Function_t myFunc2 = boost::bind(&MyFunc2, _1);

    myFunc1(5);
    myFunc2(6);
}