Objective C in-code profiling

To check how long something is running in objective C:

1) Declare an NSDate and set it to [NSDate date]

2) Run the code you want to test

3) Get an NSInterval from the NSDate by sending the timeIntervalSinceNow message

So for example:

NSDate* date = [NSDate date];

//RUN some expensive code her

NSTimeInterval interval = [date timeIntervalSinceNow];

NSLog(@"Time running expensive code: %f", interval);