Add spec for Enum.slide/3 (#12050)

sabiwara · josevalim · commit 189d61b756e5 · 2022-08-04T16:33:36.000+02:00
diff --git a/lib/elixir/lib/enum.ex b/lib/elixir/lib/enum.ex
@@ -2651,6 +2651,7 @@ defmodule Enum do
 
   """
   @doc since: "1.13.0"
+  @spec slide(t, Range.t() | index, index) :: list
   def slide(enumerable, range_or_single_index, insertion_index)
 
   def slide(enumerable, single_index, insertion_index) when is_integer(single_index) do
