相关疑难解决方法(0)

读到这个,我得到的印象是这段代码应该有效:

class Connection : public std::enable_shared_from_this<Connection>
{
public:
    Connection(tcp::socket&& socket) : socket_(std::move(socket)) {}
private:
    tcp::socket socket_;
};

但编译器在构造函数中发出此错误:

Call to implicitly-deleted copy constructor of 'tcp::socket' (aka'basic_stream_socket<boost::asio::ip::tcp>')

我也定义了BOOST_ASIO_HAS_MOVE.我使用Xcode 4.6.3并在编译器设置中定义了这个:

C++ Language dialect: GNU++11[-std=gnu++11]
C++ Standard Library: libc++(LLVM C++ standard library with C++11 support)