From 06667620514ef981ab9538ddd187ef8e8925321e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Ma=C5=82ecki?= <me@mmalecki.com>
Date: Tue, 15 Apr 2014 10:47:32 +0200
Subject: [PATCH] Add a comment about `rateRec` and its friend

---
 lib/routes.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/routes.js b/lib/routes.js
index e09b91e8..6b11a17e 100644
--- a/lib/routes.js
+++ b/lib/routes.js
@@ -26,6 +26,8 @@ var poll = function(req, res) {
   var rateRec = _trader.rate(req.params.currency);
   var satoshiBalanceRec = _trader.balance;
 
+  // `rateRec` and `satoshiBalanceRec` are both objects, so there's no danger
+  // of misinterpreting rate or balance === 0 as 'Server initializing'.
   if (!rateRec || !satoshiBalanceRec)
     return res.json({err: 'Server initializing'});
   if (Date.now() - rateRec.timestamp > STALE_TICKER)