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What is the difference between C, C99, ANSI C and GNU C?

...been confused by the difference between C and C99. What does C mean here? Is it C89? Check the languages at the bottom of this submit . It contains both C and C99. ...
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What's this =! operator? [duplicate]

I was surprised by this code: 13 Answers 13 ...
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Is VB really case insensitive?

...art an argument here, but for whatever reason, it's typically stated that Visual Basic is case insensitive and C languages aren't (and somehow that is a good thing). ...
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Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)

... No, C++ does not support 'finally' blocks. The reason is that C++ instead supports RAII: "Resource Acquisition Is Initialization" -- a poor name† for a really useful concept. The idea is that an object's destructor is responsible for freeing resources. When the object has ...
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How to check if a symlink exists

I'm trying to check if a symlink exists in bash. Here's what I've tried. 8 Answers 8 ...
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What is the difference between MOV and LEA?

I would like to know what the difference between these instructions is: 12 Answers 12 ...
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What is output buffering?

What is output buffering and why is one using it in PHP? 7 Answers 7 ...
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MySQL select where column is not empty

In MySQL, can I select columns only where something exists? 13 Answers 13 ...
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What is a WeakHashMap and when to use it? [duplicate]

What is a WeakHashMap and when should one be using it? What are the differences between a WeakHashMap and a HashMap ? ...
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What is Ad Hoc Query?

... Ad hoc is latin for "for this purpose". You might call it an "on the fly" query, or a "just so" query. It's the kind of SQL query you just loosely type out where you need it var newSqlQuery = "SELECT * FROM table WHERE id = " + myI...