From fdef10a78e7900b076efca5a5ce3dce63767bd4d Mon Sep 17 00:00:00 2001
From: Bert Peters <bert@bertptrs.nl>
Date: Sat, 4 Dec 2021 11:28:32 +0100
Subject: [PATCH] Less awkward line length hack

---
 2021/src/day03.rs | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/2021/src/day03.rs b/2021/src/day03.rs
index b03f565..e3e0f1e 100644
--- a/2021/src/day03.rs
+++ b/2021/src/day03.rs
@@ -67,15 +67,14 @@ fn find_remaining(mut strings: Vec<u32>, most: bool, len: usize) -> u32 {
 pub fn part2(input: &mut dyn Read) -> String {
     let mut strings = Vec::new();
     let mut reader = LineIter::new(input);
-    let mut len = None;
+    let mut read_line = reader.next();
+    let len = read_line.unwrap().len();
 
-    while let Some(line) = reader.next() {
+    while let Some(line) = read_line {
         strings.push(u32::from_str_radix(line, 2).unwrap());
-        len = Some(line.len());
+        read_line = reader.next();
     }
 
-    let len = len.unwrap();
-
     let oxygen = find_remaining(strings.clone(), true, len);
     let co2 = find_remaining(strings, false, len);