swift 性能测试：通过输出日志来监测某一段程序运行所消耗的时间

Posted 2021-05-19

func measure(f: ()->()) {
    let start = CACurrentMediaTime()
    f()
    let end = CACurrentMediaTime()
    print("测量时间：\(end - start)")
}

measure {
    doSomeHeavyWork()
}