use Map.reject

2022-11-29 21:42:55 +09:00 · 2022-11-29 21:42:55 +09:00 · 32679a526a
parent fb87183a6f
commit 32679a526a
1 changed files with 1 additions and 1 deletions
--- a/2021/day9.exs
+++ b/2021/day9.exs
@ -45,7 +45,7 @@ defmodule Day9 do
  end

  defp remove_nines(cave) do
-    floor = cave.floor |> Enum.reject(&match?({_k, 9}, &1)) |> Map.new()
+    floor = Map.reject(cave.floor, &match?({_k, 9}, &1))
    %Cave{cave | floor: floor}
  end