Specs

map_update(map(), Map.key(), (Map.value() -> Map.value())) ::
  {:ok, map()} | :error

Updates value at key in map by function.

If key is present in map with value value, then {:ok, new_map} is returned where new_map is equivalent map with the result of function with argument value as the new value for key. Otherwise, :error is returned.

Specs

tuple_update_position!(tuple(), non_neg_integer(), (term() -> term())) ::
  tuple()

Updates element at position in tuple by function.