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java中的缓存技术该如何实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...都比操作硬盘要快的多,但是如果你的数据要考虑到break down的问题,因为放在内存中的数据我们称之为没有持久话的数据,如果硬盘上没有备份,机器down机之后,很难或者无法恢复.
(2) 硬盘.一般来说,很多缓存框架会结合使用内存和...
How to hide status bar in Android
...LLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
}
Check Doc here : https://developer.android.com/training/system-ui/status.html
and your app will go fullscreen. no status bar, no title bar. :)
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Storing Data in MySQL as JSON
...s. See also Secondary Indexes and Virtual Generated Columns.
More info:
https://dev.mysql.com/doc/refman/5.7/en/json.html
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Does Python support multithreading? Can it speed up execution time?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How do I reflect over the members of dynamic object?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Is it possible to install another version of Python to Virtualenv?
... dep
$ wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz
$ wget https://raw.github.com/pypa/virtualenv/master/virtualenv.py
Extract and install Python-2.7.3 into the pyenv dir. make clean is optional if you are doing this a 2nd, 3rd, Nth time...
$ tar -xzvf Python-2.7.3.tgz
$ cd Python-...
Convert System.Drawing.Color to RGB and Hex Value
...g.Format("0{0}", color.B.ToString("X")) : color.B.ToString("X"));
}
Ref: https://social.msdn.microsoft.com/Forums/en-US/4c77ba6c-6659-4a46-920a-7261dd4a15d0/how-to-convert-rgba-value-into-its-equivalent-hex-code?forum=winappswithcsharp
...
Stop/Close webcam which is opened by navigator.getUserMedia
...ream (audio or video) and stop each of them individually.
More info here: https://developers.google.com/web/updates/2015/07/mediastream-deprecations?hl=en#stop-ended-and-active
Example (from the link above):
stream.getTracks().forEach(function(track) {
track.stop();
});
Browser sup...
CSS last-child selector: select last-element of specific class, not last child inside of parent?
... selector is as of now only implemented in Safari.
For further reading:
https://drafts.csswg.org/selectors-4/#the-nth-child-pseudo
http://caniuse.com/#search=nth-child
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How to find and turn on USB debugging mode on Nexus 4
...
At first I tried up up down down left right left right b a select start. Didn't work. Thanks for your solution.
– ahnbizcad
Jan 13 '15 at 7:49
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