Fast switching..

[Regan Heath]

Hi all,

I've been AWOL from this NG for a while but recently a friend of mine 
sent me a link to this:
http://blogs.msdn.com/jomo_fisher/archive/2007/03/28/fast-switching-with-linq.aspx

and my first thought was; can something similar (or even better) be done 
in D. :)

I admit, I haven't even spent 5 mins thinking about how I might do it, 
but I've never been particularly good with the compile time features of 
D so I figured I'd post something here and see what the people who are 
good at it can come up with.

So, consider this a little challenge .. it may turn out to be trivial, 
it might not, I have no idea.

R