Stuart Hinson (Sep 27 2024 at 20:47): Stuart Hinson (Sep 27 2024 at 20:47):I've been struggling longer than I'd like to admit writing a function to search a starting folder for any nested folders named 'foo'. Specifically, nested Tasks are tripping me up. If anyone's up for writing a quick implementation I'd love to study it
Ian McLerran (Sep 27 2024 at 21:07):I’d be happy to write one up when I get home here. I think you should be able to adapt this function which recursively prints a directory tree to do what you’re trying to. Just change the accumulator.
https://github.com/imclerran/roc-openrouter/blob/main/package/Toolkit/FileSystem.roc#L89-L109
Ian McLerran (Sep 27 2024 at 21:54):This should do the trick:
findDirs : Str, Path -> Task (List Path) _
findDirs = \query, searchPath ->
findDirsHelper [] (Path.listDir! searchPath) query
findDirsHelper : List Path, List Path, Str -> Task (List Path) _
findDirsHelper = \found, dirContents, query ->
appendMatch = \acc, path ->
when Path.display path |> Str.splitLast "/" is
Ok { after: dirname } if dirname == query -> List.append acc path
_ -> acc
when dirContents is
[path, .. as remainder] ->
if Path.isDir! path then
appendMatch found path
|> findDirsHelper! (Path.listDir! path) query
|> findDirsHelper remainder query
else
findDirsHelper found remainder query
[] -> Task.ok found
Thank you! That's very clear and exactly what I needed
Notification Bot (Sep 27 2024 at 23:05):Stuart Hinson has marked this topic as resolved.
Last updated: Jul 26 2025 at 12:14 UTC