32 lines
1.0 KiB
C++
32 lines
1.0 KiB
C++
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// Copyright (C) 2009-2012 Lorenzo Caminiti
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// Distributed under the Boost Software License, Version 1.0
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// (see accompanying file LICENSE_1_0.txt or a copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// Home at http://www.boost.org/libs/local_function
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#include <boost/local_function.hpp>
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#include <boost/function.hpp>
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#include <boost/phoenix/core.hpp>
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#include <boost/phoenix/function.hpp>
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#include <boost/detail/lightweight_test.hpp>
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//[phoenix_factorial_local
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int main(void) {
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using boost::phoenix::arg_names::arg1;
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int BOOST_LOCAL_FUNCTION(int n) { // Unfortunately, monomorphic.
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return (n <= 0) ? 1 : n * factorial_impl(n - 1);
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} BOOST_LOCAL_FUNCTION_NAME(recursive factorial_impl)
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boost::phoenix::function< boost::function<int (int)> >
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factorial(factorial_impl); // Phoenix function from local function.
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int i = 4;
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BOOST_TEST(factorial(i)() == 24); // Call.
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BOOST_TEST(factorial(arg1)(i) == 24); // Lazy call.
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return boost::report_errors();
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}
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//]
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