From aebd9319f5e2e4cc5dc519dfb6fc39f66157b279 Mon Sep 17 00:00:00 2001
From: Julien Fontanet <julien.fontanet@isonoe.net>
Date: Wed, 29 Apr 2015 13:17:31 +0200
Subject: [PATCH] Comments in Collection#_onUpdate().

---
 packages/xo-collection/src/index.js | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/packages/xo-collection/src/index.js b/packages/xo-collection/src/index.js
index 3a321e619..5fb4b9392 100644
--- a/packages/xo-collection/src/index.js
+++ b/packages/xo-collection/src/index.js
@@ -99,14 +99,14 @@ export default class Index {
 
       const prev = keysToHash[key]
       const hash = computeHash(value, key)
-      if (hash === prev) {
-        continue
-      }
 
-      if (prev != null) {
-        delete itemsByHash[prev][key]
-      }
+      // Same hash, nothing to do.
+      if (hash === prev) continue
 
+      // Removes item from the previous hash's list if any.
+      if (prev != null) delete itemsByHash[prev][key]
+
+      // Inserts item into the new hash's list if any.
       if (hash != null) {
         (
           itemsByHash[hash] ||