Trailing comma in variable declaration

[Ky-Anh Huynh]

On Sunday, 29 July 2018 at 10:46:12 UTC, Jonathan M Davis wrote:
> 
> Well, most folks would just make those separate statements, in 
> which case, there would be no commas at all. Some folks do put 
> multiple variable declarations on a single line, but if you do 
> that, a trailing comma looks terrible. I doubt that using a 
> single statement to declare multiple variables but putting it 
> on multiple lines was even a use case that was really 
> considered. Also, a quick test with a C++ compiler shows that 
> it's not legal there, so the rules we have with regard to this 
> probably just came from C++. AFAIK, the only significant change 
> that D has from C/C++ with regards to declaring multiple 
> variables in a single statement is that the * is considered 
> part of the type and thus
>
> int* a, b, c;
>
> declares three variables of type int* in D, whereas in C/C++, 
> it would declare a single variable of type int* and two of type 
> int.
>
> - Jonathan M Davis

Thanks a lot for your explantion, Jonathan.

I understand the idea is to minimize the differences between 
C/C++ and D (FIXME.) Anyway the missing feature suprised me; I 
thought variable declaration is simply a (compile time) list, and 
as an array, leading comma was acceptable :)