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Virtual/pure virtual explained

... 32 In a C++ class, virtual is the keyword which designates that, a method can be overridden (i.e. ...
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process.env.NODE_ENV is undefined

... I don't think I missed anything but whenever I call the process.env.NODE_ENV the only value I get back is undefined. According to my research the default value should be 'development'. How is this value dynamically set and where is it set initially? ...
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Pacman: how do the eyes find their way back to the monster hole?

... | edited Feb 6 '18 at 7:32 Trevor Powell 1,03388 silver badges1818 bronze badges answered Jun 30 '10 a...
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C# code to validate email address

...nternally: const string pattern = @"^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x...
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In Eclipse, what can cause Package Explorer “red-x” error-icon when all Java sources compile without

...ill find the problem is extra files with an underscore in some folders e.g __duplicatefile.java . To fix this, rightclick on the project and select : Show In > Navigator . Then delete the duplicate files with underscore and build your project. – GraSim May ...
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HtmlEncode from Class Library

I have a class library (in C#). I need to encode my data using the HtmlEncode method. This is easy to do from a web application. My question is, how do I use this method from a class library that is being called from a console application? ...
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Is there a way to make a DIV unselectable?

...alse;" ondragstart="return false;">your text</div> jQuery: var _preventDefault = function(evt) { evt.preventDefault(); }; $("div").bind("dragstart", _preventDefault).bind("selectstart", _preventDefault); Rich s...
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Implications of foldr vs. foldl (or foldl')

Firstly, Real World Haskell , which I am reading, says to never use foldl and instead use foldl' . So I trust it. 7 A...
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Remove local git tags that are no longer on the remote repository

... I had to go git tag -l | %{git tag -d $_} to get this working in PowerShell. Not sure about anyone else. – Alain Dec 20 '16 at 20:27 ...
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How to temporarily exit Vim and go back

... answered Dec 10 '09 at 7:32 Jay ZengJay Zeng 1,39199 silver badges1010 bronze badges ...