I am trying to compile the following code taken from here but I am getting a compile error. Does anyone have any ideas what might be wrong?

The code

#include <iostream>
#include <functional>

struct Foo {
    Foo(int num) : num_(num) {}
    void print_add(int i) const { std::cout << num_+i << '\n'; }
    int num_;
};


int main()
{
    // store a call to a member function
    std::function<void(const Foo&, int)> f_add_display = &Foo::print_add;
    Foo foo(314159);
    f_add_display(foo, 1);
}

The compile error :

Error   1   error C2664: 'std::_Func_class<_Ret,_V0_t,_V1_t>::_Set' : 
cannot convert parameter 1 from '_Myimpl *' to 'std::_Func_base<_Rx,_V0_t,_V1_t> *' 

Thanks.

This looks like a bug in VS2012, I have made a bug report here.For now the following works :Edit: edited based on Xeo's suggestion to use std::mem_fn

#include <iostream>
#include <functional>

struct Foo {
    Foo(int num) : num_(num) {}
    void print_add(int i) const { std::cout << num_+i << '\n'; }
    int num_;
};

int main()
{
    // store a call to a member function
    std::function<void(const Foo&, int)> f_add_display = std::mem_fn(&Foo::print_add);
    Foo foo(314159);
    f_add_display(foo, 1);
}

Your code is kinda strange. You bind foo and still have a std::function<void(const Foo&, int)>. The only reason this works is because std::bind swallows unneeded arguments. The correct equivalent thing to what you're trying in the question would be using std::mem_fn(&Foo::print_add).
          – Xeo  Oct 29

std::mem_fn is a simple wrapper for member pointers that returns a function object which takes a pointer or reference to the class as its first parameter and every parameter from a member function (if any) after that. std::bind is for binding arguments to a function.
             – Xeo   Oct 29 '12 at 5:40
  Note that for those who use 2013, I actually able to reproduce the same error even though it has been submitted for 2012. I hope someone else can confirm this too.
                    – Arly   Oct 30 '13 at 12:15