Big O notation in Apple docs

Check out Big O notation in Apple docs by JR. Here is an excerpt:


/*
 The -bytes method returns a pointer to a contiguous region of memory managed by the receiver.
 If the regions of memory represented by the receiver are already contiguous, it does so in O(1) time, otherwise it may take longer
 Using -enumerateByteRangesUsingBlock: will be efficient for...

The full article is available here.