From d10d36498c07d82541d5f80f3bfa514f82f01521 Mon Sep 17 00:00:00 2001
From: Johannes Schaefer <jschaef@mail.uni-paderborn.de>
Date: Wed, 5 Dec 2018 15:19:12 +0100
Subject: [PATCH] day05 performance push part 2 through more efficient case
 insensitive comparison

---
 src/tasks/day05.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tasks/day05.rs b/src/tasks/day05.rs
index 0e80d04..72577db 100644
--- a/src/tasks/day05.rs
+++ b/src/tasks/day05.rs
@@ -22,7 +22,7 @@ pub fn task2() {
                 reduce(
                     &input
                         .chars()
-                        .filter(|ch| ch.to_lowercase().next().unwrap() != c)
+                        .filter(|ch| ch.eq_ignore_ascii_case(&c))
                         .collect::<String>(),
                 ).len(),
             )