On May 08, 2012, at 10:07 AM, Eric V. Smith wrote: >I don't disagree with this. But we've got a function that we're asking >to return one of 2 things, as you say. How is this normally handled? I >would not use a callback. I'd return a tuple with the two things: >(loader, list_of_portions). That seems way more straightforward. +1 -Barry