How can I store a boost::bind object as a class member?

Question

I\'m writing an application that uses boost::asio. Asio\'s async_receive (or async_read) is invariably shown using a boost::bind

Answer 1

Use boost::function:

class Whatever
{
public:
    Whatever()
    {
        functor = boost::bind(
            &chat_session::handle_read_header,
            shared_from_this(),
            boost::asio::placeholders::error,
            boost::asio::placeholders::bytes_transferred
        );
        boost::asio::async_read(
            socket_,
            boost::asio::buffer(
               read_msg_.data(),
               chat_message::header_length
            ),
            functor
        );
    }
private:
    boost::function functor;
};

... or something like that.