Issue with forward ranges which are reference types

[Andrei Alexandrescu]

On 8/16/11 11:05 PM, Jonathan M Davis wrote:
> Sorry that this is long, but it's very important IMHO, and I don't know how to
> make it much shorter and cover what it's supposed to cover.
[snip]

Keep things as they are. Algorithms operate on ranges as specified in 
their signatures. If they need to create additional copies thereof, they 
use .save. If client code needs to pass a copy of a range to an 
algorithm, it passes .save.

Andrei