gistfile1.cpp

#include <iostream>
#include <tr1/functional>

using namespace std;
using namespace std::tr1;
using namespace std::tr1::placeholders;


void foo(int x) {
    cout << "foo " << x << endl;
}

class qux {
public:
    void bar(int x) {
        cout << "bar " << x << endl;
    }
};


int main(void) {
    qux quux;

    // low level function pointer
    void (*foo_pointer)(int) = &foo;
    // low level member function pointer
    void (qux::*bar_pointer)(int) = &qux::bar;

    (*foo_pointer)(1);
    (quux.*bar_pointer)(2);
    ((&quux)->*bar_pointer)(3);

    // high level functions
    function<void(int)> foo_function = &foo;
    // member function pointer is converted to "plain" function
    function<void(qux*, int)> bar_function = &qux::bar;

    foo_function(4);
    bar_function(&quux, 5);
    
    // what is cool about std::function
    function<void(int)> bar_bound = bind(bar_function, &quux, _1);
    bar_bound(6);
    
    return 0;
}

// vim: set ts=4 sw=4 et: