From d11d007be95163aca7097292343e108223baf46d Mon Sep 17 00:00:00 2001
From: Adam Millerchip <adam@millerchip.net>
Date: Sun, 6 Dec 2020 15:47:14 +0900
Subject: [PATCH] Use String.to_charlist/1

---
 day6/day6part1.exs | 4 ++--
 day6/day6part2.exs | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/day6/day6part1.exs b/day6/day6part1.exs
index 7122d42..86f2653 100644
--- a/day6/day6part1.exs
+++ b/day6/day6part1.exs
@@ -5,9 +5,9 @@ defmodule Day6Part1 do
     |> Stream.map(fn group ->
       group
       |> Enum.join()
-      |> String.split("", trim: true)
+      |> String.to_charlist()
       |> Enum.frequencies()
-      |> Map.delete("\n")
+      |> Map.delete(?\n)
       |> Enum.count()
     end)
     |> Enum.sum()
diff --git a/day6/day6part2.exs b/day6/day6part2.exs
index 34ad11f..ed74694 100644
--- a/day6/day6part2.exs
+++ b/day6/day6part2.exs
@@ -3,11 +3,11 @@ defmodule Day6Part2 do
     File.stream!("input")
     |> Stream.chunk_by(&(&1 == "\n"))
     |> Stream.map(fn group ->
-      frequencies = group |> Enum.join() |> String.split("", trim: true) |> Enum.frequencies()
+      frequencies = group |> Enum.join() |> String.to_charlist() |> Enum.frequencies()
 
-      count = frequencies["\n"]
+      count = frequencies[?\n]
 
-      Map.delete(frequencies, "\n")
+      Map.delete(frequencies, ?\n)
       |> Enum.count(fn {_, v} -> v == count end)
     end)
     |> Enum.sum()