[Boost-users] output to multiple streams

From: Andrew Schweitzer (a.schweitzer.grps_at_[hidden])
Date: 2006-11-27 11:32:07

Is there a standard way to output to multiple streams at the same time?

I would like to pass an ostream to a function, write output strings into 
that stream, and have them go to both cout and a file. I'd like 
something like this:

void DoSomething(ostream& ros)
{
        ros << "This goes should go to cout and to a file" << endl;
}
multi_stream ms;
fstream f("out.txt");
ms.add(cout);
ms.add(f);
DoSomething(ms);

Any suggestions?

Is this supported by the iostream library?

I took a brief look at iostream doc and without really absorbing it, it 
doesn't seem to directly support this functionality. Maybe I need to 
read more carefully.

Thanks,

Andy