static foreach

[Andrei Alexandrescu]

On 03/28/2010 05:09 PM, bearophile wrote:
> Navin Kumar:
>> It seems it would be more readable to have "static foreach" and simply put a caveat that it's only supported inside functions for now.<
>
> I agree. I have recently written about it:
> http://www.digitalmars.com/webnews/newsgroups.php?art_group=digitalmars.D&article_id=107873
>
> If you see at this document (about half of those ideas are now present in D2)
> http://s3.amazonaws.com/dconf2007/WalterAndrei.pdf
>
> At page 52 you can see that Walter&Andrei too were appreciating the idea of a static foreach. So I presume you will see it in D3 or even sooner :-) I presume it's not a hard thing to implement. But Walter is busy, and Andrei's book was already late.
>
> Bye,
> bearophile

static foreach was part of the plan until recently, but Walter 
encountered severe implementation difficulties so we had to abandon it.

I agree that it's odd that the same statement iterates at compile-time 
or run-time depending on the iterated type.


Andrei