Rust switches to external iteration

[Peter Alexander]

On Thursday, 4 July 2013 at 18:06:51 UTC, Jonathan M Davis wrote:
> On Thursday, July 04, 2013 19:28:29 w0rp wrote:
>> I see yield as a tool only for when you only want to create 
>> input
>> ranges easily. There is a definite value in the other range
>> types, but yield is useful for when you just want to produce an
>> input range quickly.
>
> And given how useless pure input ranges are, I really don't see 
> much value in
> that. About all they give you is the ability to iterate over a 
> set of values
> once. The other range types are _far_ more powerful, and pure 
> input ranges
> should be avoided as much as possible IMHO.
>
> - Jonathan M Davis

To be fair, most of the time all you want to do is iterate over 
the range, so while they aren't powerful, they are sufficient 
most of the time.