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sed beginner: changing all occurrences in a folder
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edited May 25 '09 at 3:13
answered May 25 '09 at 2:51
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position: fixed doesn't work on iPad and iPhone
...g post that explains the problem: http://www.quirksmode.org/blog/archives/2010/12/the_fifth_posit.html
Also see this page for a compatibility chart showing which mobile browsers support position:fixed;: http://www.quirksmode.org/m/css.html
(but note that the mobile browser world is moving very qui...
What does the Ellipsis object do?
... object that can appear in slice notation. For example:
myList[1:2, ..., 0]
Its interpretation is purely up to whatever implements the __getitem__ function and sees Ellipsis objects there, but its main (and intended) use is in the numpy third-party library, which adds a multidimensional array ty...
How do I obtain the frequencies of each value in an FFT?
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The first bin in the FFT is DC (0 Hz), the second bin is Fs / N, where Fs is the sample rate and N is the size of the FFT. The next bin is 2 * Fs / N. To express this in general terms, the nth bin is n * Fs / N.
So if your sample rate, Fs is say 44.1 kHz a...
定时浇灌控制台：综合应用案例 · App Inventor 2 中文网
...立设备档案并保存 Broker 参数。
连接控制器，填写 1–300 秒和操作说明，开始浇灌后显示等待；只有请求 ID、动作与秒数全部匹配的确认才记成功。
15 秒无有效确认记录状态未知。可再次发送停止，收到 OFF、0 的对应确认才...
What's the difference between “version number” in iTunes Connect, “bundle version”, “bundle version
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edited Feb 21 '13 at 8:03
answered Sep 2 '11 at 8:58
Fab...
How can I see the request headers made by curl when sending a request to the server?
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I think curl -v is the easiest. It will spit out the request headers (lines prefixed with '>'...
How to position a table at the center of div horizontally & vertically
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Centering is one of the biggest issues in CSS. However, some tricks exist:
To center your table...
Update a record without first querying?
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answered Nov 18 '10 at 19:15
CD..CD..
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App Inventor 2 AsciiConversion 拓展，ASCII编码与解码，Ascii码转换 · App Inventor 2 中文网
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用法示例：返回Ascii码 48 的字符，结果将是字符：“0”。
Conversion: 给出 Ascii码列表，转换后返回相应的文本。
当您使用UART蓝牙接收数据时，此功能非常有用，因为UART接收到的数据是包含Ascii码的列表...