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38 lines
1.0 KiB
C++
38 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/config.hpp>
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#ifndef BOOST_NO_LAMBDAS
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#define BOOST_TEST_MODULE TestAddLambda
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#include <boost/test/unit_test.hpp>
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#include <algorithm>
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BOOST_AUTO_TEST_CASE( test_add_lambda )
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//[add_lambda
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{ // Some local scope.
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int sum = 0, factor = 10; // Variables in scope to bind.
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auto add = [factor, &sum](int num) { // C++11 only.
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sum += factor * num;
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};
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add(1); // Call the lambda.
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int nums[] = {2, 3};
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std::for_each(nums, nums + 2, add); // Pass it to an algorithm.
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BOOST_CHECK( sum == 60 ); // Assert final summation value.
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}
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//]
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#else // NO_LAMBDAS
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int main(void) { return 0; } // Trivial program.
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#endif // NO_LAMBDAS
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