Dispatching values to handlers, as in std.concurrency

[Sean Kelly]

On May 6, 2013, at 10:03 AM, "Luís.Marques" <luismarques at gmail.com>"@puremagic.com <luismarques at gmail.com> wrote:
> 
> How can I also accept subclasses?

How are the messages stored?  std.concurrency uses Variant.convertsTo.