From b58c31b4b5bc1f5f3459d1736a5b71a5d300c9b1 Mon Sep 17 00:00:00 2001
From: Tony Garnock-Jones <tonygarnockjones@gmail.com>
Date: Thu, 26 Jun 2014 20:39:36 -0400
Subject: [PATCH] Note about forbidding set! of state variables

---
 minimart/actor.rkt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/minimart/actor.rkt b/minimart/actor.rkt
index 948964c..3f45385 100644
--- a/minimart/actor.rkt
+++ b/minimart/actor.rkt
@@ -1,5 +1,8 @@
 #lang racket/base
 
+;; TODO: syntax-id-rules: raise-syntax-error on set!, pointing users
+;; to the #:update pseudo-action.
+
 (provide actor
 	 observe-subscribers
 	 observe-advertisers