Created
December 11, 2018 07:29
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Swift方法执行耗时测量
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| func measure(block: () -> Void) -> Double { | |
| let start = DispatchTime.now() | |
| block() | |
| let end = DispatchTime.now() | |
| let nanoTime = end.uptimeNanoseconds - start.uptimeNanoseconds // <<<<< Difference in nano seconds (UInt64) | |
| let timeInterval = Double(nanoTime) / 1_000_000_000 | |
| return timeInterval | |
| } |
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