foreach (x; a .. b) and foreach_reverse (x; a .. b) should be disallowed

[Jesse Phillips]

On Sun, 17 May 2009 21:25:50 -0400, Jason House wrote:

> 
> I agree that makes little sense.
> 
> I'm curious, why the sudden pruning of features? Can you please consider
> removing SFINAE? I'd also love to see is expressions go the way of the
> dinosaur. I don't know what their replacement should look like, but
> there _has_ to be a better and less error prone syntax!

So, what is SFINAE?