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What is the difference between Fragment and FragmentActivity?

... inheritance differences, what are the main differences between Fragment and FragmentActivity ? To what scenarios are each class best suited? I'm trying to get an understanding of why both of these classes exist... ...
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Using .sort with PyMongo

With PyMongo, when I try to retrieve objects sorted by their 'number' and 'date' fields like this: 1 Answer ...
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How to use XPath contains() here?

... at the other contains() examples around here, but nothing that uses an AND operator. I can't get this to work: 5 Answe...
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Git SVN error: a Git process crashed in the repository earlier

... The file in question is likely .git/index.lock and it should be safe to just remove it if you have no other git processes running. Make sure a git-svn command isn't hanging. PS My usual approach to fixing git-svn problems is to make a fresh pull of the repository. Tim...
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php static function

...() is actually an instance method which you are calling as a static method and you get away with it because sayHi() never refers to $this. Static functions are associated with the class, not an instance of the class. As such, $this is not available from a static context ($this isn't pointing to any...
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How to merge a list of lists with same type of items to a single list of items?

...tMany(x => x.SelectMany(y => y)).ToList(); – Brandon Kramer Apr 3 '17 at 14:01 add a comment  |  ...
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How to set the style -webkit-transform dynamically using JavaScript?

... The JavaScript style names are WebkitTransformOrigin and WebkitTransform element.style.webkitTransform = "rotate(-2deg)"; Check the DOM extension reference for WebKit here. share | ...
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check if directory exists and delete in one command unix

Is it possible to check if a directory exists and delete if it does,in Unix using a single command? I have situation where I use ANT 'sshexec' task where I can run only a single command in the remote machine. And I need to check if directory exists and delete it... ...
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The “backspace” escape character '\b': unexpected behavior?

So I'm finally reading through K&R , and I learned something within the first few pages, that there is a backspace escape character, \b . ...
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data type not understood

... postfix: "", imageUploader: { 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....