12345678910111213141516171819202122232425262728293031323334353637383940 |
- // Boost.Function library
- // Copyright Douglas Gregor 2002-2003. 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 <boost/function.hpp>
- #include <boost/lambda/lambda.hpp>
- #include <boost/lambda/bind.hpp>
- #include <boost/core/lightweight_test.hpp>
- #include <iostream>
- #include <cstdlib>
- static unsigned
- func_impl(int arg1, bool arg2, double arg3)
- {
- using namespace std;
- return abs (static_cast<int>((arg2 ? arg1 : 2 * arg1) * arg3));
- }
- int main()
- {
- using boost::function;
- using namespace boost::lambda;
- function <unsigned(bool, double)> f1 = bind(func_impl, 15, _1, _2);
- BOOST_TEST_EQ( f1(true, 2.0), 30 );
- function <unsigned(double)> f2 = boost::lambda::bind(f1, false, _1);
- BOOST_TEST_EQ( f2(2.0), 60 );
- function <unsigned()> f3 = boost::lambda::bind(f2, 4.0);
- BOOST_TEST_EQ( f3(), 120 );
- return boost::report_errors();
- }
|