Any chance to call Tango as Extended Standard Library
Andrei Alexandrescu
SeeWebsiteForEmail at erdani.org
Sun Jan 18 18:54:02 PST 2009
Bill Baxter wrote:
> On Mon, Jan 19, 2009 at 9:16 AM, Andrei Alexandrescu
> <SeeWebsiteForEmail at erdani.org> wrote:
>
>>> Unless it's a class you mean?
>> Yah, ranges are meant to have value semantics. If you have a class container
>> exposing ranges, define the range separately from the container itself:
>>
>> MyIterable collection;
>> foreach (element; collection.all) {}
>> foreach (element; collection.all) {}
>
> Add .opRange so that's not necessary? Or allow opApply to return a range?
> Otherwise it looks like a step backwards.
Why is it a step backwards? A given container may define a number of
ranges. Arrays are deceivingly simple because they have one obvious way
of iteration, but even for them you'd have to write:
int[] a;
foreach (element; a.retro) { ... }
Andrei
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