From a4cb8608da2651b386d7c8539ffedbe803991f07 Mon Sep 17 00:00:00 2001
From: Simon Kornblith <simon@simonster.com>
Date: Sun, 24 Oct 2010 23:55:50 +0000
Subject: [PATCH] remove ZU.probability

---
 chrome/content/zotero/xpcom/debug.js     |  2 +-
 chrome/content/zotero/xpcom/utilities.js | 13 -------------
 chrome/content/zotero/xpcom/zotero.js    |  2 +-
 3 files changed, 2 insertions(+), 15 deletions(-)

diff --git a/chrome/content/zotero/xpcom/debug.js b/chrome/content/zotero/xpcom/debug.js
index 47abac9af..ebeca3479 100644
--- a/chrome/content/zotero/xpcom/debug.js
+++ b/chrome/content/zotero/xpcom/debug.js
@@ -80,7 +80,7 @@ Zotero.Debug = new function () {
 			dump('zotero(' + level + ')' + (_time ? deltaStr : '') + ': ' + message + "\n\n");
 		}
 		if (_store) {
-			if (Zotero.Utilities.prototype.probability(1000)) {
+			if (Math.random() < 1/1000) {
 				// Remove initial lines if over limit
 				var overage = this.count() - Zotero.Prefs.get('debug.store.limit');
 				if (overage > 0) {
diff --git a/chrome/content/zotero/xpcom/utilities.js b/chrome/content/zotero/xpcom/utilities.js
index 2a716fe8e..aeddfe4ff 100644
--- a/chrome/content/zotero/xpcom/utilities.js
+++ b/chrome/content/zotero/xpcom/utilities.js
@@ -406,19 +406,6 @@ Zotero.Utilities.prototype.rand = function (min, max) {
 }
 
 
-/**
- * Return true according to a given probability
- *
- * @param	{Integer}	x		Will return true every x times on average
- * @return	{Boolean}			On average, TRUE every x times
- *									the function is called
- */
-Zotero.Utilities.prototype.probability = function (x) {
-	return this.rand(1, x) == this.rand(1, x);
-}
-
-
-
 /**
  * Determine the necessary data type for SQLite parameter binding
  *
diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index 186e329c7..594038099 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -1377,7 +1377,7 @@ var Zotero = new function(){
 		// DEBUG: this might not need to be permanent
 		Zotero.Relations.purge();
 		
-		if (!skipStoragePurge && Zotero.Utilities.prototype.probability(10)) {
+		if (!skipStoragePurge && Math.random() < 1/10) {
 			Zotero.Sync.Storage.purgeDeletedStorageFiles('zfs');
 			Zotero.Sync.Storage.purgeDeletedStorageFiles('webdav');
 		}