From e1171830b99a0f542be311b227b21cd06f540d77 Mon Sep 17 00:00:00 2001
From: trwnh <a@trwnh.com>
Date: Wed, 2 Dec 2020 11:00:12 -0600
Subject: [PATCH] shorter xor

---
 02/02.exs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/02/02.exs b/02/02.exs
index e75604a..6841374 100644
--- a/02/02.exs
+++ b/02/02.exs
@@ -31,7 +31,7 @@ list
 	fn {p1, p2, character, password} ->
 		first = Enum.at(password, p1-1) == character
 		second = Enum.at(password, p2-1) == character
-		(first and !second) or (!first and second)
+		first != second # exclusive or is equivalent to two things not matching (not both true or both false)
 	end
 )
 |> Enum.count()