Overhauling the notion of output range

[BLS]

On 12/07/2010 03:17, Andrei Alexandrescu wrote:
> he notion of output range has been a tad vague in the past; up until now
> a range that wanted to qualify as an output range had to define a method
> called put.

What if we have to deal with non orthogonal structures, or .. simple 
directed graphs ?

well well.. yet we do not even have a simple map!(string , T)  in 
std.container .. So, For me the Range Stuff still lacks proof of 
product. I remain pretty sceptical.
bjoern