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Which characters are valid in CSS class names/selectors?

...racter is a hyphen, the second character must2 be a letter or underscore, and the name must be at least 2 characters long. -?[_a-zA-Z]+[_a-zA-Z0-9-]* In short, the previous rule translates to the following, extracted from the W3C spec.: In CSS, identifiers (including element names, classes, ...
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How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators dif

What is the difference between == and === in PHP? 11 Answers 11 ...
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C# Class naming convention: Is it BaseClass or ClassBase or AbstractClass

... convention (e.g. System.Data.Common.DbParameter, System.Data.Common.DbCommand). Personally I would avoid using the suffix unless I wanted to emphasize the fact that it's an abstract class and felt that otherwise users of the class might expect the name to indicate a concrete implementation. ...
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Bad class file magic or version

I already know that question has been already asked very often and answers, but no one of the answers i found fixed my problem. ...
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PreparedStatement IN clause alternatives?

... An analysis of the various options available, and the pros and cons of each is available here. The suggested options are: Prepare SELECT my_column FROM my_table WHERE search_column = ?, execute it for each value and UNION the results client-side. Requires only one pre...
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Boolean vs boolean in Java

... Yes you can use Boolean/boolean instead. First one is Object and second one is primitive type. On first one, you will get more methods which will be useful. Second one is cheap considering memory expense The second will save you a lot more memory, so go for it Now choose your way....
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Is it .yaml or .yml?

... The nature and even existence of file extensions is platform-dependent (some obscure platforms don't even have them, remember) -- in other systems they're only conventional (UNIX and its ilk), while in still others they have definite se...
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Formula to determine brightness of RGB color

...GB values. I know it can't be as simple as adding the RGB values together and having higher sums be brighter, but I'm kind of at a loss as to where to start. ...
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Generic method multiple (OR) type constraint

...t types. That means you could just as well leave out the generic parameter and provide overloads. – Botz3000 May 31 '12 at 13:00 ...
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Git Symlinks in Windows

Our developers use a mix of Windows and Unix based OS's. Therefore, symlinks created on Unix machines become a problem for Windows developers. In windows (msysgit), the symlink is converted to a text file with a path to the file it points to. Instead, I'd like to convert the symlink into an actual W...