cleanup

src/main.rs

@@ -4,7 +4,7 @@ use std::{
     process::exit
 };
 
-fn main() -> Result<(), io::Error> {
+fn main() {
     let args = env::args().collect::<Vec<String>>();
     let name = &String::from("roll");
     let name = args.first().unwrap_or(name);
@@ -21,8 +21,8 @@ fn main() -> Result<(), io::Error> {
             .map(|y| y
                 .parse::<u128>()
                 .ok()
-                .filter(|z| *z != 0 as u128)
-                .map_or(Err(""), |z| Ok(z))
+                .filter(|z| *z != 0_u128)
+                .map_or(Err(""), Ok)
                 .unwrap_or_else(|_| {
                     eprintln!("{name}: {x}: {}",
                         "Improperly formatted die (should be [rolls]d[sides]).");
@@ -38,9 +38,7 @@ fn main() -> Result<(), io::Error> {
         let mut lock = stdout.lock();
         for _ in 0..rolls {
             let num = fastrand::u128(1..=sides);
-            writeln!(lock, "{num}");
+            writeln!(lock, "{num}");  // not handling for 🚀🚀 blazing fast 🚀🚀 speed
         }
     }
-
-    Ok(())
 }