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switch case statement error: case expressions must be constant expression

...instead of an if-else: private enum LayoutElement { NONE(-1), PLAY_BUTTON(R.id.playbtn), STOP_BUTTON(R.id.stopbtn), MENU_BUTTON(R.id.btnmenu); private static class _ { static SparseArray<LayoutElement> elements = new SparseArray<LayoutElement>(); } ...
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How do I simulate a hover with a touch in touch enabled browsers?

...s to your CSS as well: .hover { -webkit-user-select: none; -webkit-touch-callout: none; } To stop the browser asking you to copy/save/select the image or whatever. Easy! share | improve ...
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How to do a Jquery Callback after form submit?

... And if the <form> is submited usually ? (I mean not with Ajax) What can I put in the first argument of .bind() ? EDIT : well, I guess click. Nvm, sorry. :p – 4wk_ Feb 4 '13 at 13:32 ...
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How to create composite primary key in SQL Server 2008

... | improve this answer | follow | answered Oct 13 '10 at 9:39 ThiloThilo 235k8989 gold badges460460 ...
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Delete directories recursively in Java

... With Java 7, we can finally do this with reliable symlink detection. (I don't consider Apache's commons-io to have reliable symlink detection at this time, as it doesn't handle links on Windows created with mklink.) For the sake of history, here's...
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JavaScript file upload size validation

...e used for this purpose, and it's easy to test whether it's supported and fall back (if necessary) to another mechanism if it isn't. Here's a complete example: <!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-type" content="text/html;charset=UTF-8"> <title>Show...
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Unix command-line JSON parser? [closed]

... "bar": 2, "foo": 1 } Note: Depending on your version of python, all keys might get sorted alphabetically, which can or can not be a good thing. With python 2 it was the default to sort the keys, while in python 3.5+ they are no longer sorted automatically, but you have the option to sort ...
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Should I use static_cast or reinterpret_cast when casting a void* to whatever

...ore type safety and just cast from A to B”. However, this doesn’t actually describe the effect of a reinterpret_cast. Rather, reinterpret_cast has a number of meanings, for all of which holds that “the mapping performed by reinterpret_cast is implementation-defined.” [5.2.10.3] But in the ...
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Using [UIColor colorWithRed:green:blue:alpha:] doesn't work with UITableView seperatorColor?

...ur UIColor method requires a float from 0-1, not 0-255. You need to divide all your RGB values by 255.0, as follows: self.tableView.seperatorColor = [UIColor colorWithRed:127.0f/255.0f green:127.0f/255.0f blue:127.0f/255.0f alpha:1.0f]; ...
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ReactJS - Does render get called any time “setState” is called?

Does React re-render all components and sub components every time setState() is called? 7 Answers ...