From 0d8e1e624005b58aecd6a6dddaefc20da33cdf4a Mon Sep 17 00:00:00 2001
From: James Halliday <substack@gmail.com>
Date: Wed, 8 Sep 2010 15:42:06 -0800
Subject: [PATCH] compact like in ruby, but for hashes

---
 lib/hash.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/hash.js b/lib/hash.js
index db3395b..0c9c2a2 100644
--- a/lib/hash.js
+++ b/lib/hash.js
@@ -85,6 +85,10 @@ function Hash (hash, extra) {
         return memoized.values;
     } });
     
+    Object.defineProperty(self, 'compact', { get : function () {
+        return Hash(hash).filter(function (x) { return x !== undefined });
+    } });
+    
     Object.defineProperty(self, 'clone', { get : function () {
         return Hash(Hash.clone(hash));
     } });