day02: Use iterator instead of temporary Vec

day02/src/main.rs

@@ -53,9 +53,9 @@ fn main() -> Result<(), Box<dyn error::Error>> {
 	let mut sum: u32 = 0;
 	for line in reader.lines() {
 		let line = line?;
-		let split_result: Vec<&str> = line.split_whitespace().collect();
-		let other = Values::get_from_str(&split_result[0]);
-		let my = Values::get_from_str(&split_result[1]);
+		let mut split_result = line.split_whitespace().map(|o| Values::get_from_str(o));
+		let other = split_result.next().unwrap();
+		let my = split_result.next().unwrap();
 		sum += my.get_u32();
 		if other == my {
 			sum += 3;