2019: day01: improve sub overflow handling

2019-12-01 16:36:46 +01:00 · 2019-12-01 16:36:46 +01:00 · dd4e610324
parent 5e2fb25c94
commit dd4e610324
1 changed files with 1 additions and 4 deletions
--- a/aoc2019/src/day01.rs
+++ b/aoc2019/src/day01.rs
@ -10,10 +10,7 @@ pub fn run() -> Result<()> {
 }

 fn fuel_needed(module_weight: u64) -> u64 {
-    match (module_weight / 3).checked_sub(2) {
-        Some(f) => f,
-        None => 0,
-    }
+    (module_weight / 3).saturating_sub(2)
 }

 fn part1(input: &str) -> Result<u64> {