src/main.rs

@@ -1,5 +1,4 @@
 pub mod year_2023;
-pub mod utils;
 
 fn main() {
     println!("Hello, world!");

src/utils/input_reader.rs

@@ -1,13 +0,0 @@
-// https://doc.rust-lang.org/stable/rust-by-example/std_misc/file/read_lines.html
-use std::fs::File;
-use std::io::{self, BufRead};
-use std::path::Path;
-
-
-pub 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())
-}

src/utils/mod.rs

@@ -1 +0,0 @@
-pub mod input_reader;

src/year_2023/day_01_trebuchet/part_one.rs

@@ -1,7 +1,10 @@
-use crate::utils::input_reader;
+// https://doc.rust-lang.org/stable/rust-by-example/std_misc/file/read_lines.html
+use std::fs::File;
+use std::io::{self, BufRead};
+use std::path::Path;
 
 pub fn part_one() {
-    if let Ok(lines) = input_reader::read_lines("./input/input.txt") {
+    if let Ok(lines) = read_lines("./input.txt") {
         let mut result = 0;
 
         for line in lines {
@@ -12,6 +15,14 @@ pub fn part_one() {
     }
 }
 
+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())
+}
+
 fn parse_line(s: &str) -> u32 {
     const RADIX: u32 = 10;
 

src/year_2023/day_01_trebuchet/part_two.rs

@@ -1,9 +1,10 @@
 use std::collections::HashMap;
-
+use std::fs::File;
-use crate::utils::input_reader;
+use std::io::{self, BufRead};
+use std::path::Path;
 
 pub fn part_two() {
-    if let Ok(lines) = input_reader::read_lines("./input.txt") {
+    if let Ok(lines) = read_lines("./input.txt") {
         let mut result = 0;
 
         for line in lines {
@@ -14,6 +15,13 @@ pub fn part_two() {
     }
 }
 
+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())
+}
 
 fn parse_line(s: &str) -> u32 {
     const RADIX: u32 = 10;

src/year_2023/day_02_cube_conundrum/part_one.rs

@@ -1,7 +1,9 @@
-use crate::utils::input_reader;
+use std::fs::File;
+use std::io::{self, BufRead};
+use std::path::Path;
 
 pub fn part_one() {
-    if let Ok(lines) = input_reader::read_lines("./input.txt") {
+    if let Ok(lines) = read_lines("./input.txt") {
         let mut result = 0;
 
         for line in lines {
@@ -12,6 +14,14 @@ pub fn part_one() {
     }
 }
 
+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())
+}
+
 fn process_line(s: &str) -> u32 {
     let v: Vec<&str> = s.split(':').collect();
 

src/year_2023/day_02_cube_conundrum/part_two.rs

@@ -1,6 +1,7 @@
 use std::cmp::max;
-
+use std::fs::File;
-use crate::utils::input_reader;
+use std::io::{self, BufRead};
+use std::path::Path;
 
 struct Game {
     red: u32,
@@ -9,7 +10,7 @@ struct Game {
 }
 
 pub fn part_two() {
-    if let Ok(lines) = input_reader::read_lines("./input.txt") {
+    if let Ok(lines) = read_lines("./input.txt") {
         let mut result = 0;
 
         for line in lines {
@@ -20,7 +21,13 @@ pub fn part_two() {
     }
 }
 
-
+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())
+}
 
 fn process_line(s: &str) -> u32 {
     let v: Vec<&str> = s.split(':').collect();

src/year_2023/day_03_gear_ratios/part_one.rs

@@ -1,6 +1,6 @@
-use std::{fs::File, io};
+use std::fs::File;
-
+use std::io::{self, BufRead};
-use crate::utils::input_reader;
+use std::path::Path;
 
 enum Engine {
     Symbol(char),
@@ -9,7 +9,7 @@ enum Engine {
 }
 
 pub fn part_one() {
-    if let Ok(lines) = input_reader::read_lines("./input.txt") {
+    if let Ok(lines) = read_lines("./input.txt") {
         let matrix = create_matrix(lines);
         let result = process_matrix(&matrix);
 
@@ -17,6 +17,13 @@ pub fn part_one() {
     }
 }
 
+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())
+}
 
 fn create_matrix(lines: io::Lines<io::BufReader<File>>) -> Vec<Vec<Engine>> {
     let mut matrix: Vec<Vec<Engine>> = Vec::new();

src/year_2023/day_04_scratchcards/part_one.rs

@@ -1,9 +1,10 @@
+use std::fs::File;
+use std::io::{self, BufRead};
+use std::path::Path;
 use std::collections::HashSet;
 
-use crate::utils::input_reader;
-
 pub fn part_one() {
-    if let Ok(lines) = input_reader::read_lines("./input.txt") {
+    if let Ok(lines) = read_lines("./input.txt") {
         let mut result = 0;
 
         for line in lines {
@@ -45,3 +46,10 @@ fn process_line(s: &str) -> u32 {
 }
 
 
+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())
+}

src/year_2023/day_06_wait_for_it/part_one.rs

@@ -1,7 +1,9 @@
-use crate::utils::input_reader;
+use std::fs::File;
+use std::io::{self, BufRead};
+use std::path::Path;
 
 pub fn part_one() {
-    if let Ok(lines) = input_reader::read_lines("./input.txt") {
+    if let Ok(lines) = read_lines("./input.txt") {
         let mut margin = 1;
 
         let mut race_results: Vec<Vec<u32>> = Vec::new();
@@ -39,4 +41,10 @@ fn process_race_result(time: u32, distance: u32) -> u32 {
     return win_count;
 }
 
-
+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())
+}

src/year_2023/day_06_wait_for_it/part_two.rs

@@ -1,7 +1,9 @@
-use crate::utils::input_reader;
+use std::fs::File;
+use std::io::{self, BufRead};
+use std::path::Path;
 
 pub fn part_two() {
-    if let Ok(lines) = input_reader::read_lines("./input.txt") {
+    if let Ok(lines) = read_lines("./input.txt") {
         let mut race_result: Vec<u64> = Vec::new();
 
         for line in lines {
@@ -36,4 +38,10 @@ fn process_race_result(time: u64, distance: u64) -> u64 {
     return win_count;
 }
 
-
+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())
+}