Deprecate assigning a slice to a static array?

[Nick Treleaven]

On Wednesday, 31 August 2022 at 15:36:54 UTC, Salih Dincer wrote:
>   int[] dcba = [ 7, 6, 5, 4, 3, 2, 1, 0];
>   int[4] arr = dcba[4..$];

The above conversion would also be deprecated because 
`dcba[4..$]` is not one of the slice expression forms with 
compile-time known length (the compiler doesn't know what `$` 
is). `dcba[4..8]` could be used instead.

In case the runtime matching length check is desired with static 
array initialization (i.e. check `dcba.length` is not > 8), it 
would be written as:

     int[4] arr; // optimizer can remove `= 0`
     arr[] = dcba[4..$]; // matching length check now more obvious

>   arr = dcba[0..4];

That is fine as I mentioned, it's one of the forms recognised.