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What is the !! (not not) operator in JavaScript?

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What is http multipart request?

... | edited Nov 9 '17 at 13:12 Nil Llisterri 59455 silver badges1919 bronze badges answered Oct 3...
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Printing leading 0's in C?

I'm trying to find a good way to print leading 0's, such as 01001 for a zipcode. While the number would be stored as 1001, what is a good way to do it? ...
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WPF Application that only has a tray icon

... 114 There's no NotifyIcon for WPF. A colleague of mine used this freely available library to good ...
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Rails migrations: self.up and self.down versus change

... 110 For many operations rails can guess what is the inverse operation (without problems). For exam...
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Set a DateTime database field to “Now”

... 177 In SQL you need to use GETDATE(): UPDATE table SET date = GETDATE(); There is no NOW() func...
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How to hide databases that I am not allowed to access

... Had the same issue, as its a shared space on AWS with 1000 other DBs. In pgAdmin III make sure you are disconnected from the server, select the Server, right click -> properties, Advanced tab, in 'DB restriction' type in the name of your database(s) enclosed in single quot...
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What is `params.require(:person).permit(:name, :age)` doing in Rails 4?

... | edited Aug 25 '14 at 15:31 0112 3,01766 gold badges2626 silver badges5050 bronze badges answe...
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Effect of a Bitwise Operator on a Boolean in Java

... 123 The operators &, ^, and | are bitwise operators when the operands are primitive integral t...
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Grepping a huge file (80GB) any way to speed it up?

... 153 Here are a few options: 1) Prefix your grep command with LC_ALL=C to use the C locale instead...