From fdf26a776f27e4059c8e7ccec0926a94edb72fd4 Mon Sep 17 00:00:00 2001
From: sahennenkamp <91508060+sahennenkamp@users.noreply.github.com>
Date: Fri, 13 Jan 2023 14:45:47 -0800
Subject: [PATCH] Hint towards making library mut

Follow up to https://github.com/google/comprehensive-rust/pull/137
Gives the student a hint that it's okay to edit variables within main.
---
 src/exercises/day-1/book-library.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/exercises/day-1/book-library.rs b/src/exercises/day-1/book-library.rs
index cab1879f..284045aa 100644
--- a/src/exercises/day-1/book-library.rs
+++ b/src/exercises/day-1/book-library.rs
@@ -98,7 +98,8 @@ impl Library {
 // ANCHOR: main
 // This shows the desired behavior. Uncomment the code below and
 // implement the missing methods. You will need to update the
-// method signatures, including the "self" parameter!
+// method signatures, including the "self" parameter! You may
+// also need to update the variable bindings within main.
 fn main() {
     let library = Library::new();