Rust switches to external iteration

[Andrei Alexandrescu]

On 7/4/13 1:18 AM, Timon Gehr wrote:
> On 07/04/2013 07:04 AM, Andrei Alexandrescu wrote:
>> Evidence we've done the right thing by emphasizing ranges instead of
>> opApply.
>>
>> http://www.reddit.com/r/programming/comments/1hl2qr/rust_07_released/
>> https://mail.mozilla.org/pipermail/rust-dev/2013-June/004599.html
>>
>> Andrei
>
> Well, probably, but implementing ranges is still too tedious.
> It is very likely that rust is going to fix that.

Let's see.

> It should be as simple as:
>
> auto map(alias a,R)(R r){
> foreach(x;r)
> yield a(x);
> }

Nonono. This gives you an input range. The current map() gives a range 
of the same category as the range passed. This is a major issue with 
yield. It does make it easy to implement input ranges, but I'm glad we 
did not build with it.

Andrei