CFAbsoluteTime start = CFAbsoluteTimeGetCurrent(); // do something CFAbsoluteTime end = CFAbsoluteTimeGetCurrent(); NSLog(@"time cost: %0.3f", end - start);
CFAbsoluteTime start = CFAbsoluteTimeGetCurrent(); // do something CFAbsoluteTime end = CFAbsoluteTimeGetCurrent(); NSLog(@"time cost: %0.3f", end - start);