initial commit

02-dive!/.gitignore

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+/target

02-dive!/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "dive"
+version = "0.1.0"

02-dive!/Cargo.toml

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+[package]
+name = "dive"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

02-dive!/LICENSE

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+The MIT License (MIT)
+Copyright (c) 2021 danielyrovas
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

02-dive!/src/main.rs

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+#![allow(dead_code, unused_imports)]
+use std::fs::File;
+use std::path::Path;
+use std::io::{self, BufRead};
+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"),
+        }
+      }
+    }
+  }
+  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>, 
+{
+    let file = File::open(filename)?;
+    Ok(io::BufReader::new(file).lines())
+}