adium 2438:2a6e8ec43901: Use distinctUnionOfObjects instead of u...

[commits at adium.im]

details:	http://hg.adium.im/adium/rev/2a6e8ec43901
revision:	2438:2a6e8ec43901
author:		Zachary West <zacw at adium.im>
date:		Mon Jun 01 13:59:05 2009 -0400

Use distinctUnionOfObjects instead of unionOfObjects+iterating.

This came to me while not paying attention in class today.

diffs (21 lines):

diff -r 80efb0a2c258 -r 2a6e8ec43901 Source/NEHGrowlPlugin.m
--- a/Source/NEHGrowlPlugin.m	Mon Jun 01 13:53:45 2009 -0400
+++ b/Source/NEHGrowlPlugin.m	Mon Jun 01 13:59:05 2009 -0400
@@ -303,13 +303,10 @@
 		AIListObject *overallListObject = nil;
 
 		// If all events are from the same listObject, let's use that one in the message.
-		for (AIListObject *listObject in [events valueForKeyPath:@"@unionOfObjects.AIListObject"]) {
-			if (!overallListObject) {
-				overallListObject = listObject;
-			} else if (overallListObject != listObject) {
-				overallListObject = nil;
-				break;
-			}
+		NSArray *listObjects = [events valueForKeyPath:@"@distinctUnionOfObjects.AIListObject"];
+		
+		if (listObjects.count == 1) {
+			overallListObject = [listObjects objectAtIndex:0];
 		}
 		
 		AILog(@"Posting multiple event - %@ %@ %@ %d", eventID, overallListObject, chat, events.count);