Why is std.algorithm so complicated to use?

[Timon Gehr]

On 07/10/2012 01:41 AM, Ali Çehreli wrote:
> On 07/09/2012 04:20 PM, Timon Gehr wrote:
>  > On 07/10/2012 12:53 AM, Jonathan M Davis wrote:
>
>  >> dmd is generally good about not having
>  >> useless warnings.
>  >
>  > case 0,1: // warning: switch fallthrough (nonsense)
>  > case 2,3:
>  >
>  > This is the only kind of warning I get (clearly a bug, and it is
>  > reported).
>
> I thought the code above was illegal at least in 2.059.

You can write the code as
case 0: case 1: case 2,3:

and be ok.

> I get an error
> unless I use goto case:
>
> void main()
> {
>      int i;
>      int j;
>
>      switch (i) {
>      case 0,1:
>          goto case;  // goto, embraced by D :)
>
>      case 2,3:
>          j = 42;
>          break;
>
>      default:
>          j = 43;
>      }
> }
>
> Ali
>

The error only shows up if -w is used.