which_clean() is a safety check for clean(). It shows you the targets that clean() will invalidate (or remove if garbage_collection is TRUE). It helps you avoid accidentally removing targets you care about.

  list = character(0),
  path = NULL,
  cache = drake::drake_cache(path = path)



Targets to remove from the cache: as names (symbols) or character strings. If the tidyselect package is installed, you can also supply dplyr-style tidyselect commands such as starts_with(), ends_with(), and one_of().


Character vector naming targets to be removed from the cache. Similar to the list argument of remove().


Path to a drake cache (usually a hidden .drake/ folder) or NULL.


drake cache. See new_cache(). If supplied, path is ignored.

See also


if (FALSE) { isolate_example("Quarantine side effects.", { plan <- drake_plan(x = 1, y = 2, z = 3) make(plan) cached() which_clean(x, y) # [1] "x" "y" clean(x, y) # Invalidates targets x and y. cached() # [1] "z" }) }