Made everything a bit more rustic

src/main.rs

@@ -3,7 +3,7 @@ mod days;
 mod macros;
 
 use anyhow::Result;
-use common::file::read_lines;
+use common::file::read_string;
 use days::{day_provider, DayTrait, ResultType};
 use std::{
     env,
@@ -47,7 +47,7 @@ fn output(day: usize, part: usize, result: ResultType, time: Duration) {
     }
 }
 
-fn run_part(day: &dyn DayTrait, is_part1: bool, lines: &[String]) -> Result<Duration> {
+fn run_part(day: &dyn DayTrait, is_part1: bool, lines: &str) -> Result<Duration> {
     let now = Instant::now();
     let result = if is_part1 {
         day.part1(lines)?
@@ -70,7 +70,7 @@ fn run_part(day: &dyn DayTrait, is_part1: bool, lines: &[String]) -> Result<Dura
 }
 
 fn run(day: &dyn DayTrait, part1: bool, part2: bool) -> Result<Duration> {
-    let lines = read_lines(day.get_day_number(), "input.txt")?;
+    let lines = read_string(day.get_day_number(), "input.txt")?;
     let elapsed1 = if part1 {
         run_part(day, true, &lines)?
     } else {