On Monday, November 08, 2010 13:49:36 Adam Cigánek wrote:
> Hello,
> 
> Why are multiple alias this declarations in a class/struct not allowed? This page http://www.digitalmars.com/d/2.0/class.html#AliasThis says so, and also dmd2 gives me an error when I try to do it, but TDPL says something different (on page 231): "a class could introduce any number of alias this declarations, thus subtyping any number of types."). Did this feature change? Or is it a bug?

The online documentation isn't completely up-to-date, and dmd is not completely up-to-date with TDPL. In virtually all cases that TDPL and dmd conflict, TDPL wins, so if TDPL says something and dmd doesn't do it that way, then it's just that dmd is behind, and it will do it that way later. In most cases, dmd matches up with TDPL already, but there are several cases where it hasn't caught up yet. It will though. Multiple alias thises is one of those.

- Jonathan M Davis

Ok guys, thanks. Got it. Well, good to know. Any chance of knowing when could this feature be implemented?

adam.

2010/11/9 Jonathan M Davis <jmdavisProg@gmx.com>:
> On Monday, November 08, 2010 13:49:36 Adam Cigánek wrote:
>> Hello,
>>
>> Why are multiple alias this declarations in a class/struct not allowed? This page http://www.digitalmars.com/d/2.0/class.html#AliasThis says so, and also dmd2 gives me an error when I try to do it, but TDPL says something different (on page 231): "a class could introduce any number of alias this declarations, thus subtyping any number of types."). Did this feature change? Or is it a bug?
>
> The online documentation isn't completely up-to-date, and dmd is not completely up-to-date with TDPL. In virtually all cases that TDPL and dmd conflict, TDPL wins, so if TDPL says something and dmd doesn't do it that way, then it's just that dmd is behind, and it will do it that way later. In most cases, dmd matches up with TDPL already, but there are several cases where it hasn't caught up yet. It will though. Multiple alias thises is one of those.
>
> - Jonathan M Davis
>

Adam Cigánek wrote:
> Ok guys, thanks. Got it. Well, good to know. Any chance of knowing
> when could this feature be implemented?

First half of next year.

> 
> adam.
> 
> 2010/11/9 Jonathan M Davis <jmdavisProg@gmx.com>:
>>  In most cases, dmd matches
>> up with TDPL already, but there are several cases where it hasn't caught up yet.
>> It will though. Multiple alias thises is one of those.
>>
>> - Jonathan M Davis
>>