// signal.cpp : Defines the entry point for the console application.
//

#include <iostream>
#include <boost/bind.hpp>
#include <boost/signal.hpp>

struct fn_arity1
{
    typedef void result_type;

    template <class T1>
    void operator()(const T1 _d1) const {std::cout << _d1 << std::endl;}
};

struct fn_arity2
{
    typedef void result_type;

    template <class T1, class T2>
    void operator()(const T1 _d1, const T2 _d2) const {std::cout << _d1 << " " << _d2 << std::endl;}
};


int main(int argc, char* argv[])
{
    fn_arity1 fn1;
    fn_arity2 fn2;

    // unary to unary
    boost::signal<void (double)> s1;
    s1.connect(boost::bind(fn1, _1));
    s1(1.1);

    // binary to binary
    boost::signal<void (double, double)> s2;
    s2.connect(boost::bind(fn2, _1, _2));
    s2(1.1, 2.2);

    // binary to unary ???
    boost::signal<void (double, double)> s3;
    s3.connect(boost::bind(fn1, _2));
    s3(1.1, 2.2);

	return 0;
}