02-dive

02-dive!/src/main.rs

@@ -1,32 +1,37 @@
 #![allow(dead_code, unused_imports)]
 use std::fs::File;
-use std::path::Path;
 use std::io::{self, BufRead};
+use std::path::Path;
 fn main() {
-  let mut h = 0;
-  let mut v = 0;
-  let mut aim = 0;
-  if let Ok(lines) = read_lines("directions.txt") {
-    for line in lines {
-      if let Ok(val) = line {
-        println!("{}", val);
-        //shadow assignment
-        let val: Vec<&str> = val.split(' ').collect();
-        let cmd = val[0];
-        let n = val[1].parse::<u32>().unwrap();
-        match cmd {
-          "forward" => {h += n; v += n * aim },
-          "down" => aim += n,
-          "up" => aim -= n,
-          _ => println!("not a command"),
+    let mut h = 0;
+    let mut v = 0;
+    let mut aim = 0;
+    if let Ok(lines) = read_lines("directions.txt") {
+        for line in lines {
+            if let Ok(val) = line {
+                println!("{}", val);
+                //shadow assignment
+                let val: Vec<&str> = val.split(' ').collect();
+                let cmd = val[0];
+                let n = val[1].parse::<u32>().unwrap();
+                match cmd {
+                    "forward" => {
+                        h += n;
+                        v += n * aim
+                    }
+                    "down" => aim += n,
+                    "up" => aim -= n,
+                    _ => println!("not a command"),
+                }
+            }
         }
-      }
     }
-  }
-  println!("h: {}, v: {}, final position: {}", h, v, h * v );
+    println!("h: {}, v: {}, final position: {}", h, v, h * v);
 }
 
-fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>> where P: AsRef<Path>, 
+fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
+where
+    P: AsRef<Path>,
 {
     let file = File::open(filename)?;
     Ok(io::BufReader::new(file).lines())