From 526dddce7256aaeee289b5fa512e63bb65f2fcba Mon Sep 17 00:00:00 2001
From: Nicole L <dlegare.1001@gmail.com>
Date: Fri, 28 Feb 2025 10:31:15 -0800
Subject: [PATCH] Add speaker note about `for` and array refs (#2665)

---
 src/references/solution.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/references/solution.md b/src/references/solution.md
index b4a4c92c..5517c2d4 100644
--- a/src/references/solution.md
+++ b/src/references/solution.md
@@ -3,3 +3,11 @@
 ```rust,editable
 {{#include exercise.rs:solution}}
 ```
+
+<details>
+
+- Note that in `normalize` we were able to do `*item /= mag` to modify each
+  element. This is because we're iterating using a mutable reference to an
+  array, which causes the `for` loop to give mutable references to each element.
+
+</details>