Named index of current iteration in for-each loop

I'm building some functionality that relies on several arrays that need to be filled, checked and modified on the fly. I like the for-each loop with dim(*auto: nn) for this. In the initial load proces I can use '*next' as an index, which is great.
There is no way to get the current iteration index in a subsequent loop without holding track of it myself.

In simplified pseudo code:

"elements" has been filled in a previous loop and now needs to be updated.

for-each element in elements;
elemIndex += 1;
// do some checking
element.checked = *on;
// update element data
element.data = 'different';
elements(elemIndex) = element;
endfor;

I would like to get rid of elemIndex field and use something like this

elements(*current) = element

I think this would make the for-each loop even more powerful.

Idea priority

Low

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Named index of current iteration in for-each loop