I think it could be great to add `countIndexed` an...

# stdlib

[louiscad]

I think it could be great to add countIndexed and sumByIndexed to the stdlib. In an effort to remove a var and a forEachIndexed, I came across this need. However, I'd not want to bloat the stdlib. Please, add your ➕ if already needed one of these functions.

[Pavlo Liapota]

Just a note: I think it is better to use foldIndexed instead of var and forEachIndexed.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/fold-indexed.html

[Pavlo Liapota]

For example: https://pl.kotl.in/rklgR6Tf4

[louiscad]

Thanks for the suggestion, worked like a charm!

[marcinmoskala]

You can always use withIndex and destructuring.

[marcinmoskala]

list.withIndex().sumBy { (index, value) -> ... }

[louiscad]

That's also a great option!

[marcinmoskala]

And more universal 😉