merge branch documentation

src/utility/cfg.rs

@@ -104,6 +104,10 @@ pub fn get_debug_configuration() -> Settings {
 }
 
 /// Removes comments and empty lines
+/// Filters out empty lines and comments from the reader `BufReader`.
+/// 
+/// Returns a [`Vec<String>`], each entry containing a valid
+/// line from the input file.
 fn filter_garbage<R: std::io::Read>(reader: BufReader<R>) -> Vec<String> {
     reader.lines()
         .map(|l| l.unwrap())
@@ -111,11 +115,13 @@ fn filter_garbage<R: std::io::Read>(reader: BufReader<R>) -> Vec<String> {
         .collect()
 }
 
-
 /// Inserts user settings into setting map
+/// Adds a <K, V> pair to a [`Settings`] map.
+/// 
+/// Returns the updated [`Settings`].
 fn update_settings_map(mut settings_map: Settings, key: &str, setting: &str) -> Settings {
     let key = MachineSettingKey::from(key);
-    let setting = setting.parse::<u64>().unwrap_or(0);
+    let setting = str::parse::<u64>(setting).unwrap_or(0);
     settings_map.insert(key, setting);
     settings_map
 }