[Boost-users] refering to objects when constructing a boost::fusion::vector

Subject: [Boost-users] refering to objects when constructing a boost::fusion::vector
From: Sean Farrow (sean.farrow_at_[hidden])
Date: 2011-03-21 08:51:46

Hi list:
I'm in the process of using boost::fusion::vector, with the following definition:
typedef boost::fusion::vector<PmStream*, MIDIInputThread, boost::shared_ptr<boost::asio::io_service>, boost::shared_ptr<boost::thread> > InputType;
I'm then constructing this using the following code:
PmStream* Port;
MIDIInputThread cl;
InputType NewInput =InputType(Port, cl, boost::make_shared<boost::asio::io_service>, boost::make_shared<boost::thread>(boost::bind(&boost::asio::io_service::run, io.get())));
What I'm wondering is is there a way to refer to a previously declared argument in this case, I'd like to refer to the shared pointer containing the boost::asio::io_service. Given that I've not actually named this argument, could I use anything from either boost.fusion or boost.mpl to do what I require.
Any help appreciated.
Regards
Sean.