From cfe2c0db4f64318d1116a67b76b12b23ba347720 Mon Sep 17 00:00:00 2001
From: Psychedelic Squid <psquid@psquid.net>
Date: Wed, 7 Mar 2012 03:22:25 +0000
Subject: [PATCH] Sum function.

---
 snippets.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/snippets.js b/snippets.js
index b769658..8e6a9af 100644
--- a/snippets.js
+++ b/snippets.js
@@ -27,6 +27,14 @@ Array.prototype.include = function(value) {
     return false;
 };
 
+Array.prototype.sum = function() {
+    var sum = 0;
+    for(var i=0;i<this.length;i++) {
+        sum += (parseFloat(this[i]) || 0);
+    }
+    return sum;
+};
+
 Array.prototype.allGroupings = function() {
     if (this.length == 0) {
         return [];  /* short-circuit the empty-array case */