Why is there no range iteration with index by the language?

[jmh530]

On Wednesday, 10 June 2020 at 00:53:30 UTC, Seb wrote:
> [snip]
>
> Anyhow, I would be highly in favor of DMD doing this. It's one 
> of those many things that I have on my list for D3 or a D fork.

Chapel supports zippered iteration [1]. From the discussion here, 
it sounds very much like the implementation is similar to what D 
does with tuples. It probably would be pretty trivial with first 
class tuples.

[1] 
https://chapel-lang.org/docs/language/spec/statements.html#zipper-iteration