Move day1 specific code to module, hide all outputs

src/day1.rs

@@ -1,3 +1,6 @@
+use std::fs::File;
+use std::io::{self, BufRead, BufReader};
+
 fn fuel_for(mass: u64) -> u64 {
     (mass / 3).saturating_sub(2)
 }
@@ -8,9 +11,16 @@ fn total_fuel(mass: u64) -> u64 {
         .sum()
 }
 
-pub fn main(masses: Vec<u64>) {
+pub fn main() -> io::Result<()> {
+    let f = BufReader::new(File::open("day1-input.txt")?);
+    let masses: Vec<u64> = f
+        .lines()
+        .map(|line| line.unwrap().parse().unwrap())
+        .collect();
     let total: u64 = masses.into_iter().map(total_fuel).sum();
     println!("Fuel needed for bringing Santa home is: {}", total);
+
+    Ok(())
 }
 
 #[test]

src/main.rs

@@ -1,25 +1,30 @@
+#[allow(dead_code)]
 mod day1;
 mod day2;
 mod day3;
 mod day4;
+mod day5;
+mod day6;
 
-use std::fs::File;
+fn main() -> std::io::Result<()> {
-use std::io::{self, BufRead, BufReader};
+    println!("========================= DAY  6");
+    day6::main()?;
 
-fn main() -> io::Result<()> {
+    //println!("========================= DAY  5");
-    let f = BufReader::new(File::open("day1-input.txt")?);
+    //day5::main()?;
-    let masses: Vec<u64> = f
-        .lines()
-        .map(|line| line.unwrap().parse().unwrap())
-        .collect();
-    day1::main(masses);
 
-    day2::part_one();
+    //println!("========================= DAY  4");
-    day2::part_two();
+    //day4::main()?;
 
-    day3::main()?;
+    //println!("========================= DAY  3");
+    //day3::main()?;
 
-    day4::main()?;
+    //println!("========================= DAY  2");
+    //day2::part_one();
+    //day2::part_two();
+
+    //println!("========================= DAY  1");
+    //day1::main()?;
 
     Ok(())
 }