DIP 1030--Named Arguments--Community Review Round 1 Feedback

[Walter Bright]

On 2/8/2020 9:09 PM, Arine wrote:
> In the D spec it's stated arguments are evaluated from left to right. I know DMD 
> doesn't follow the spec (but LDC2 does). It needs to be outlined how arguments 
> are evaluated. What makes sense at the call site, or based on the function 
> order. As arguments can be passed out of order now.
> 
>      __gshared int i = 0;
>      void foo(int a = ++i, int b = ++i, int c = ++i, int d = ++i, int e = ++i) {
>          writeln(a, " ", b, " ", c, " ", d, " ", e);
>      }
> 
> 
>      foo(d: ++i, b: ++i); // what does this print?

It says in the DIP that arguments are evaluated left to right as presented.


> How does this work with forward declaring?

D doesn't have forward declarations.