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Center image horizontally within a div

...thought I would ask. How can I center align (horizontally) an image inside its container div? 21 Answers ...
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Standard alternative to GCC's ##__VA_ARGS__ trick?

There is a well-known problem with empty args for variadic macros in C99. 10 Answers ...
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Visual Studio opens the default browser instead of Internet Explorer

...debugging. How can I get Visual Studio to open Internet Explorer instead without having to set Internet Explorer as my default browser? ...
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Does the use of the “Async” suffix in a method name depend on whether the 'async' modifier is used?

What is the convention for suffixing method names with "Async"? 7 Answers 7 ...
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Difference between Inheritance and Composition

Are Composition and Inheritance the same? If I want to implement the composition pattern, how can I do that in Java? 17 Ans...
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How to detect if multiple keys are pressed at once using JavaScript?

...ple keystroke detection is easy if you understand the concept The way I do it is like this: var map = {}; // You could also use an array onkeydown = onkeyup = function(e){ e = e || event; // to deal with IE map[e.keyCode] = e.type == 'keydown'; /* insert conditional here */ } This code ...
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Setting up maven dependency for SQL Server

...Hibernate access to SQL Server database. I set up maven dependencies for it and try to find out SQL Server connector on the same way I know MySql has it. ...
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What is the best (idiomatic) way to check the type of a Python variable? [duplicate]

...w if a variable in Python is a string or a dict. Is there anything wrong with the following code? 10 Answers ...
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Why don't Java's +=, -=, *=, /= compound assignment operators require casting?

... As always with these questions, the JLS holds the answer. In this case §15.26.2 Compound Assignment Operators. An extract: A compound assignment expression of the form E1 op= E2 is equivalent to E1 = (T)((E1) op (E2)), where ...
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What do 3 dots next to a parameter type mean in Java?

... It means that zero or more String objects (or a single array of them) may be passed as the argument(s) for that method. See the "Arbitrary Number of Arguments" section here: http://java.sun.com/docs/books/tutorial/java/javaOO...