Chris Duncan (Oct 09 2022 at 14:23): Chris Duncan (Oct 09 2022 at 14:23):I just came through an Advent of Code problem that would benefit from a List.walkBackwardsWithIndex. Would y'all consider this function, alongside walkWithIndex and walkUntilWithIndex, to be useful for the Standard Library?
Brendan Hansknecht (Oct 09 2022 at 15:04):I have no strong preference either way, but i do want to note it is very easy to create those functions. Just make your state a record with one of the values being the index.
List.walk list {index: 0, state: ...) \{index, state}, elem -> ...
Just need to increment/decrement index on each iteration.
Richard Feldman (Oct 09 2022 at 15:20):yeah I think that one's easy enough to do with walk itself that it's not worth a separate function :big_smile:
Chris Duncan (Oct 09 2022 at 15:25):@Brendan Hansknecht That's precisely the way that I implemented my function.
Last updated: Jul 26 2025 at 12:14 UTC