From 6ac3c46b374b4bb83e6a04a7fb76a511da236be5 Mon Sep 17 00:00:00 2001
From: Bastian Gruber <foreach@me.com>
Date: Mon, 22 May 2023 09:38:33 +0200
Subject: [PATCH] Add remove_open_ticket function

---
 problem_06/src/db.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/problem_06/src/db.rs b/problem_06/src/db.rs
index d039eb7..17551ac 100644
--- a/problem_06/src/db.rs
+++ b/problem_06/src/db.rs
@@ -167,6 +167,9 @@ impl Db {
 		let mut state = self.state.lock().unwrap();
 		if let Some(tickets) = state.open_tickets.get_mut(&road) {
 			tickets.retain(|t| t.plate != ticket.plate);
+			if tickets.is_empty() {
+				state.open_tickets.remove(&road);
+			}
 			return true;
 		}
 		false