DIP66 - Multiple alias this

[Andrei Alexandrescu]

On 9/28/20 3:55 PM, Andrei Alexandrescu wrote:
> On 9/28/20 2:44 PM, H. S. Teoh wrote:
>> On Mon, Sep 28, 2020 at 06:28:05PM +0000, mw via Digitalmars-d wrote:
>>> On Monday, 28 September 2020 at 18:13:15 UTC, H. S. Teoh wrote:
>>>> On Mon, Sep 28, 2020 at 05:59:19PM +0000, mw via Digitalmars-d wrote:
>>>>
>>>> As somebody already said, that's all well and good for Eiffel. It's
>>>> not so clear how to integrate this nicely in D.
>>>
>>> D has `alias` already,
>> [...]
>>
>> `alias this` is one of the things that seemed like a good idea at the
>> time, but is turning out to be something that leads to code smells.  If
>> anything, we'd like to get rid of it rather than extend it!
> 
> I'd love to get a better idea about this, e.g. a few clear examples of 
> bad uses and other few good examples where it's a win. My intuition 
> vaguely revolves around "aliasing to an rvalue is bad and lvalue is 
> good" but I year for clarity.
> 

s/year/yearn/