Revised RFC on range design for D2

[Sean Kelly]

Walter Bright wrote:
> Sean Kelly wrote:
>> I've found this invaluable at times.  And it's actually supported by 
>> C++ containers.
> 
> It's a bad idea, as it can screw up optimization. For example, if you 
> are using a change-and-swap method of updating a collection, the 
> collection cached by the foreach may get trashed.

That's fine... the optimizer has to impose certain requirements.  For 
such things I'll simply continue using for loops.


Sean