44 lines
815 B
C++
44 lines
815 B
C++
// Copyright (C) 2013 Vicente Botet
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <iostream>
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#define USE_STD 0
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#define USE_BOOST 1
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#define USED_THREAD_API USE_BOOST
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//#define USED_THREAD_API USE_STD
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#if USED_THREAD_API == USE_BOOST
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# define BOOST_THREAD_VERSION 4
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# include <boost/thread/future.hpp>
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using boost::future;
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using boost::async;
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#endif
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#if USED_THREAD_API == USE_STD
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# include <future>
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using std::future;
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using std::async;
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#endif
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future<void> do_something()
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{
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auto result = async( []{ std::cout<< "A\n"; } );
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std::cout << "B\n";
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return result; // error here
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}
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int main()
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{
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do_something().wait();
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std::cout << "Hello, World!" << std::endl;
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return 0;
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}
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