I tried udev as recommended (udevadm monitor). The VGA-Plug is reported after approx. two seconds. If I poll开发者_StackOverflow中文版 it, the change is reported almost instantly. What happens here?
If the polling was constant there would be much wasted CPU time, and the event timing would be skewed in the log output. When you manually poll, its occurring instantly, no timeout.
海信ULED电视画质有什么不同的地方?樊倩竹 1天前 来自北京海信ULED电视按照我的理解，就是不同的面板技术，一般来说，ULED有背光，可以实现分区背光；QLED有背光，属于背光灯上覆盖量子膜；OLED无背光，属于自
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It seems to me Apple won\'t allow this, but I need to make sure. For an app we\'re building, we want to ask the user to enter payment information (including credit card details) to pay for tickets. T
I need to generate an XML output using Perl code.I\'m trying not to use any libraries,as it\'s very simple, temporary XML that gets used by another step in the process.
是否在对方手机上显示已读，是由用户自行设置的。依次打开iPhone的“设置-信息”，会有一个“发送已读回执”的选项。将其打开，对方就能看到你，是否已经阅读了本条iMessage信息。将其关闭，对方就看不到。
微信重新建群怎么开发者_Go百科建？ 产品名称：苹果手机 产品型号：iPhone 11 系统版本：iOS 13
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