From 58c2555992067c88d0bc5d46ba377aa8a22725b0 Mon Sep 17 00:00:00 2001
From: Bruce D'Arcus <bdarcus@gmail.com>
Date: Sat, 23 Jul 2022 15:27:42 -0400
Subject: [PATCH] Add code comment in important place

---
 citar-org-roam.el | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/citar-org-roam.el b/citar-org-roam.el
index f7f0821..cdbbf3d 100644
--- a/citar-org-roam.el
+++ b/citar-org-roam.el
@@ -65,6 +65,8 @@
   "Return function to check for notes.
 When given a citekey, return non-nil if there's an associated
 note."
+  ;; Lookup performance for this function needs to be as fast as possible, so we
+  ;; use a hash-table.
   (let ((hasnotes (make-hash-table :test 'equal)))
     (dolist (citekey (citar-org-roam-keys-with-notes))
       (puthash citekey t hasnotes))