reorganize std::fs and std::io imports

src/main.rs

@@ -2,14 +2,12 @@
 
 #[macro_use] extern crate rocket;
 
-//use std::fmt::Display;
+use std::result::Result;
 use std::fs;
-//use rocket::Request;
+use std::io;
-use rocket_contrib::templates::Template;
-//use rocket::request::{Outcome, Request, FromRequest, FromParam};
 use rocket::request::{Request, FromParam};
-//use rocket::http::Status;
 use rocket::http::RawStr;
+use rocket_contrib::templates::Template;
 
 #[derive(serde::Serialize, Debug)]
 struct User {
@@ -20,7 +18,7 @@ struct User {
 impl<'r> FromParam<'r> for User {
     type Error = &'r RawStr;
 
-    fn from_param(param: &'r RawStr) -> std::result::Result<Self, Self::Error> {
+    fn from_param(param: &'r RawStr) -> Result<Self, Self::Error> {
         let filename = format!("users/{}.md", param);
         let content = fs::read_to_string(&filename);
         match content {
@@ -30,7 +28,7 @@ impl<'r> FromParam<'r> for User {
     }
 }
 
-fn list_users() -> std::io::Result<Vec<String>> {
+fn list_users() -> io::Result<Vec<String>> {
     let mut users: Vec<String> = vec!();
     for path in fs::read_dir("users")? {
         let file = path?;
@@ -63,16 +61,13 @@ fn show(user: User) -> Template {
 }
 
 #[get("/")]
-fn index() -> std::io::Result<Template> {
+fn index() -> io::Result<Template> {
     let users = list_users()?;
     let context = IndexContext { name: "home", items: users };
     Ok(Template::render("index", &context))
 }
 
 fn main() {
-    //let user_map = get_user_map();
-    //println!("{:#?}", user_map);
-
     rocket::ignite()
         .attach(Template::fairing())
         .mount("/", routes![index, show])