diff options
Diffstat (limited to 'src/boost/libs/function/test/lambda_test.cpp')
-rw-r--r-- | src/boost/libs/function/test/lambda_test.cpp | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/boost/libs/function/test/lambda_test.cpp b/src/boost/libs/function/test/lambda_test.cpp new file mode 100644 index 000000000..7def0fa5f --- /dev/null +++ b/src/boost/libs/function/test/lambda_test.cpp @@ -0,0 +1,40 @@ +// 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(); +} |