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BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...9BED6，广播包只能在广播信道（channel）上传输，即只能在37/38/39信道上传输（注：从蓝牙5.0开始广播包可以在其它信道上传输）。广播包发送给附近所有的observer（扫描者）。数据包：数据包Access Address为一个32bit的随机值，由Init...
How do I limit the number of rows returned by an Oracle query after ordering?
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20 rows selected.
Get first N rows
SELECT val
FROM row...
How to play audio?
...on't want to mess with HTML elements:
var audio = new Audio('audio_file.mp3');
audio.play();
function play() {
var audio = new Audio('https://interactive-examples.mdn.mozilla.net/media/examples/t-rex-roar.mp3');
audio.play();
}
<button onclick="play()">Play Audio</button>
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Google Play on Android 4.0 emulator
... URL is broken :(
– TheDude
Feb 7 '13 at 9:01
16
the -partition-size param is important, without ...
Creating an R dataframe row-by-row
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edited Feb 18 '19 at 2:37
Neil
6,59944 gold badges3939 silver badges4242 bronze badges
answered Sep 4...
CentOS 6.4下Squid代理服务器的安装与配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...发送数据请求；
2. 代理服务器检查自己的数据缓存；
3. 代理服务器在缓存中没有找到用户想要的数据；
4. 代理服务器向Internet 上的远端服务器发送数据请求；
5. 远端服务器响应，返回相应的数据；
6. 代理服务器取得远端...
Emacs bulk indent for Python
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If you are programming Python using Emacs, then you should probably be using python-mode. With p...
Why do loggers recommend using a logger per class?
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Jeremy WiebeJeremy Wiebe
3,7402020 silver badges3131 bronze badges
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How do I duplicate a whole line in Emacs?
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