From 3cd531b472ec7a7af752fa5a179686b844c82c0b Mon Sep 17 00:00:00 2001
From: Nicole LeGare <legaren@immunant.com>
Date: Wed, 26 Feb 2025 17:37:01 -0800
Subject: [PATCH] Add speaker note about `for` and array refs

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

diff --git a/src/references/solution.md b/src/references/solution.md
index b4a4c92cd998..d0ea0db9fc42 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 reference to an array, which
+  causes the `for` loop to give references to each element.
+
+</details>