foreach ref very broken: fails to call front(val)

[monarch_dodra]

andralex wrote:
> We need to improve ranges instead of using opApply for such 
> trivial
> iteration patterns. Apologies that the thread didn't make this 
> clear.
> Will close this now - sorry.

Thanks for taking the time to process my pull request. I'd argue 
that we could keep the "opApply fix" until ranges are improved, 
but at the same time, keeping things (arguably) "broken" may 
motivate for improvement more :)

That said, given the whole "return by value" thing for closed 
containers, and the fact that "front" can't be forwarded a 
operators, I'm curious to known just _HOW_ ranges *could* ever be 
improved to support the current scenario.

I'll drop the issue here regardless, but I will admit that I 
don't see how any solution other than opApply could ever work...