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how to remove shared preference while application uninstall in android

...ion ... android:allowBackup="false"> ... </application> Read this: http://developer.android.com/guide/topics/data/backup.html You will also see that if you run Lint under Android > Lint > Security: It's good to mention here that the process of backup is like a blackbox ....
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Make function wait until element exists

...n es6 modules and using Promises. es6, modules and promises: // onElementReady.js const onElementReady = $element => ( new Promise((resolve) => { const waitForElement = () => { if ($element) { resolve($element); } else { window.requestAnimationFrame(waitF...
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Installing libv8 gem on OS X 10.9+

...mfile (or) a bundle update should suffice. Hope this helps. From the libv8 README Bring your own V8 Because libv8 is the interface for the V8 engine used by therubyracer, you may need to use libv8, even if you have V8 installed already. If you wish to use your own V8 installation, rather than have i...
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cleanest way to skip a foreach if array is empty [duplicate]

...remove any lines, but the code is much more self documenting and easier to read. – Peter Ajtai Aug 10 '10 at 7:29 5 ...
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Exit Shell Script Based on Process Exit Code

...d was interrupted by a SIGPIPE signal when head -1 terminated after having read one line. To know the exit status of the elements of a pipeline cmd1 | cmd2 | cmd3 a. with zsh: The exit codes are provided in the pipestatus special array. cmd1 exit code is in $pipestatus[1], cmd3 exit code in ...
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How to determine a user's IP address in node

...is usually works well but for some reason I recently got the error "Cannot read property 'remoteAddress' of undefined" because apparently everything was null/undefined, including req.connection.socket. I'm not sure why/what conditions cause that to be the case but it would be good to check that req....
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How should I escape strings in JSON?

... to use one (I wouldn't suggest this¹), or you're writing a JSON library, read on. Escape it according to the RFC. JSON is pretty liberal: The only characters you must escape are \, ", and control codes (anything less than U+0020). This structure of escaping is specific to JSON. You'll need a JSO...
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nginx - nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)

...ion - commenting the line that contains listen 80; in that same template already solves the problem and correctly so. Your trick works but it's not what I would future readers of your question to do. That's why I suggest you select @Nathan's answer as the correct answer. – Oliv...
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Usage of __slots__?

... have a '__dict__' entry. There are a lot of details if you wish to keep reading. Why use __slots__: Faster attribute access. The creator of Python, Guido van Rossum, states that he actually created __slots__ for faster attribute access. It is trivial to demonstrate measurably significant faster a...
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Do we need semicolon at the end? [duplicate]

... There was an interesting thread recently on the node.js mailing list that's worth a read: groups.google.com/group/nodejs/browse_thread/thread/…. Check out Isaac Schlueter's coding style; it's an interesting way to take advantage of ASI -- it's not n...