• Picaud Vincent (13/13) Nov 08 2016 Hi All,
• Daniel Kozak via Digitalmars-d (4/17) Nov 08 2016 This feature has never been part of any D compiler. As you can see
• Picaud Vincent (1/1) Nov 08 2016 Thank you for your answer, that is a sad news.
• Michelle Long (3/4) Oct 25 2018 Yes, sad news! - 2034 A.D.
• Dukc (4/10) Oct 26 2018 Not quite true:

Picaud Vincent <picaud.vincent gmail.com> writes:

Hi All,

I just started to learn a little bit of D.

I read this thread
https://github.com/dlang/dmd/pull/3998

about "Multiple alias this".

I think this feature is very handy, but dmd and gcd compilers 
complain that "there must be only one" alias this.

It is not clear to me if this feature is not available yet or if 
there was a change in the language specifications (Andrei 
Alexandrescu book mentions "§6.13 Multiple subtyping") ?

Does anyone has more information concerning that?

Thanks in advance,
Vincent

Daniel Kozak via Digitalmars-d <digitalmars-d puremagic.com> writes:

Dne 8.11.2016 v 11:37 Picaud Vincent via Digitalmars-d napsal(a):

 Hi All,

 I just started to learn a little bit of D.

 I read this thread
 https://github.com/dlang/dmd/pull/3998

 about "Multiple alias this".

 I think this feature is very handy, but dmd and gcd compilers complain 
 that "there must be only one" alias this.

 It is not clear to me if this feature is not available yet or if there 
 was a change in the language specifications (Andrei Alexandrescu book 
 mentions "§6.13 Multiple subtyping") ?

 Does anyone has more information concerning that?

 Thanks in advance,
 Vincent

This feature has never been part of any D compiler.  As you can see 
there is a pull request 3998 which trying to add this to D frontend, but 
there is no activity for a few months.

Picaud Vincent <picaud.vincent gmail.com> writes:

Thank you for your answer, that is a sad news.

Michelle Long <HappyDance321 gmail.com> writes:

On Tuesday, 8 November 2016 at 11:26:31 UTC, Picaud Vincent wrote:
 Thank you for your answer, that is a sad news.

Yes, sad news! - 2034 A.D.

But it is coming!

Dukc <ajieskola gmail.com> writes:

On Tuesday, 8 November 2016 at 11:07:48 UTC, Daniel Kozak wrote:
 Dne 8.11.2016 v 11:37 Picaud Vincent via Digitalmars-d 
 napsal(a):

 [snip]


 This feature has never been part of any D compiler.  As you can 
 see there is a pull request 3998 which trying to add this to D 
 frontend, but there is no activity for a few months.

Not quite true:

https://github.com/SDC-Developers/SDC/blob/master/test/runner/test0036.d

But of course, SDC is not considered a "stable" compiler.