For those occasions when you need to check something some state at regular intervals.

Just drop this snippet at the top of your file:

static dispatchsourcet timer; void DebugTimer(dispatchblockt block) { dispatchqueuet queue = dispatchgetglobalqueue(DISPATCHQUEUEPRIORITYDEFAULT, 0); double interval = 1; timer = dispatchsourcecreate(DISPATCHSOURCETYPETIMER, 0, 0, queue); dispatchsourcesettimer(timer, dispatchtime(DISPATCHTIMENOW, (int64t)interval NSECPERSEC), (int64t)interval NSECPERSEC, (1ull NSECPERSEC) / 10); dispatchsourceseteventhandler(timer, block); dispatch_resume(timer); }

And then call this procedure, for example, in viewDidLoad:

DebugTimer(^{ NSLog(@"What is wrong with you? %@", vipView); });

Remember, this is just for debugging purposes.