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JavaScript variables declare outside or inside loop?

In AS3 I believe you should initialise all variables outside loops for increased performance. Is this the case with JavaScript as well? Which is better / faster / best-practice? ...
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How to keep the console window open in Visual C++?

I'm starting out in Visual C++ and I'd like to know how to keep the console window. 22 Answers ...
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Python: Checking if a 'Dictionary' is empty doesn't seem to work

I am trying to check if a dictionary is empty but it doesn't behave properly. It just skips it and displays ONLINE without anything except of display the message. Any ideas why ? ...
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Core dumped, but core file is not in the current directory?

While running a C program, It says "(core dumped)" but I can't see any files under the current path. 12 Answers ...
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How to get the caret column (not pixels) position in a textarea, in characters, from the start?

How do you get the caret position in a <textarea> using JavaScript? 4 Answers ...
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Drop data frame columns by name

I have a number of columns that I would like to remove from a data frame. I know that we can delete them individually using something like: ...
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Inline functions in C#?

How do you do "inline functions" in C#? I don't think I understand the concept. Are they like anonymous methods? Like lambda functions? ...
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What is a typedef enum in Objective-C?

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How to get the cuda version?

Is there any quick command or script to check for the version of CUDA installed? 19 Answers ...
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How to close IPython Notebook properly?

How to close IPython Notebook properly? 12 Answers 12 ...