About null object pattern tutorial results of 6,931
11:09
10:10
10:45
03:45
14:14
06:55
05:43
07:52
06:25
00:56
15:09
09:40
03:09
02:07
02:02
01:59
02:24
04:28
12:52
03:34
20:12
14:53
16:49
16:47
08:31
133:17
08:41
08:01
03:12
07:14
05:18
08:31
12:43
10:44
10:53
12:48
14:09
27:10
21:04
91:30
21:50
15:24
08:35
09:13
03:42
04:02