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// Boost.Signals library
// Copyright Douglas Gregor 2001-2003. Use, modification and
// distribution is subject to the Boost Software License, Version
// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// For more information, see http://www.boost.org
#include <iostream>
#include <boost/signals/signal2.hpp>
#include <string>
#include <functional>
void print_sum(int x, int y)
{
std::cout << "Sum = " << x+y << std::endl;
}
void print_product(int x, int y)
{
std::cout << "Product = " << x*y << std::endl;
}
void print_quotient(float x, float y)
{
std::cout << "Quotient = " << x/y << std::endl;
}
int main()
{
typedef boost::signal2<void, int, int, boost::last_value<void>,
std::string, std::less<std::string>,
void (*)(int, int)> sig_type;
sig_type sig;
sig.connect(&print_sum);
sig.connect(&print_product);
sig(3, 5); // print sum and product of 3 and 5
// should fail
// sig.connect(&print_quotient);
}
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