From 36118c329948d3f9449233ece05cabb85d65ad36 Mon Sep 17 00:00:00 2001
From: Zynh0722 <Zynh0722@gmail.com>
Date: Wed, 24 Apr 2024 08:16:53 -0700
Subject: [PATCH] better documentation

---
 src/main.rs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 90c49cd..961bd7f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -98,13 +98,14 @@ fn main() {
         .flatten()
         .collect();
 
+    // Storing airport data as a list of reference counted pointers
     let mut airports: Airports = HashMap::new();
-
     for record in &data {
         insert_airports_from_record(&mut airports, record);
     }
 
-    let _code_to_id: HashMap<String, usize> = HashMap::from_iter(
+    // Index for converting airport codes to airport ids
+    let code_to_id: HashMap<String, usize> = HashMap::from_iter(
         airports
             .iter()
             .map(|(id, airport)| (airport.code.clone(), *id)),
@@ -132,7 +133,7 @@ fn main() {
 
     // Using command line arguments as input
     let args: Vec<String> = env::args().collect();
-    let (origin_id, destination_id) = cmd::handle_args(args, _code_to_id);
+    let (origin_id, destination_id) = cmd::handle_args(args, code_to_id);
 
     println!("{:#?} {:#?}", graph[&origin_id], graph[&destination_id]);
 }