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Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE

...here the version number was higher than the copy you're working with right now. In either case, either: uninstall the currently installed copy or open up your phone's Settings > Application Manager to determine the version number for the installed app, and increment your <manifest android:v...
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Keeping ASP.NET Session Open / Alive

...HttpContext context) { context.Session["Heartbeat"] = DateTime.Now; } } The key is to add IRequiresSessionState, otherwise Session won't be available (= null). The handler can of course also return a JSON serialized object if some data should be returned to the calling JavaScript. ...
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Can you issue pull requests from the command line on GitHub?

... UPDATE: The hub command is now an official github project and also supports creating pull requests ORIGINAL: Seems like a particularly useful thing to add to the hub command: http://github.com/defunkt/hub or the github gem: http://github.com/defunkt/...
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iOS: how to perform a HTTP POST request?

...pple.com/library/mac/#documentation/Cocoa/Conceptual/… although if you know enough to mess around with different threads, you'll probably be fine. – Aaron Brown May 3 '12 at 21:53 ...
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What is the difference between lower bound and tight bound?

... Oh.. Now the term "tight bound" appearing quite self-explaining to me. Thanks Chris. Stupid me, perhaps I was expecting some complex idea. :) – Adeel Ansari Jan 21 '09 at 4:35 ...
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How do I find out which DOM element has the focus?

... If you can use jQuery, it now supports :focus, just make sure you are using version 1.6+. This statement will get you the currently focused element. $(":focus") From: How to select an element that has focus on it with jQuery ...
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Grab a segment of an array in Java without creating a new array on heap

...have to create a new byte array in the heap memory just to do that. Right now I have the following code: 15 Answers ...
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How to delete history of last 10 commands in shell?

...06, then 1007 becomes 1006 and 1006 is deleted, then 1008 (became 1007) is now 1006 and gets deleted. If I also wanted to delete the history delete command then it's a bit more complicated because you need to know the current max history entry. You can get this with (there may be a better way): ...
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Why can't Python's raw string literals end with a single backslash?

...arser enters a raw string (non Unicode one) and encounters a backslash it knows there are 2 characters (a backslash and a char following it). This way: r'abc\d' comprises a, b, c, \, d r'abc\'d' comprises a, b, c, \, ', d r'abc\'' comprises a, b, c, \, ' and: r'abc\' comprises a...
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How to enable PHP's openssl extension to install Composer?

...ne extension=php_openssl.dll by removing the semicolon at the beginning. Now you are good to install Composer. share | improve this answer | follow | ...