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Why is whitespace sometimes needed around metacharacters?

A few months ago I tattooed a fork bomb on my arm, and I skipped the whitespaces, because I think it looks nicer without them. But to my dismay, sometimes (not always) when I run it in a shell it doesn't start a fork bomb, but it just gives a syntax error. ...
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What is the best way to solve an Objective-C namespace collision?

Objective-C has no namespaces; it's much like C, everything is within one global namespace. Common practice is to prefix classes with initials, e.g. if you are working at IBM, you could prefix them with "IBM"; if you work for Microsoft, you could use "MS"; and so on. Sometimes the initials refer to ...
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How to detect when cancel is clicked on file input?

... While not a direct solution, and also bad in that it only (as far as I've tested) works with onfocus (requiring a pretty limiting event blocking) you can achieve it with the following: document.body.onfocus = function(){ /*rock it*/ } What's nice about this, is that you c...
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PHP how to get local IP of system

I need to get local IP of computer like 192.*.... Is this possible with PHP? 16 Answers ...
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Which version of MVC am I using?

I can't find it for some reason, feeling a little dumb. How do I know? I'm using .net 4 with VS2010. 9 Answers ...
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How to initialize const member variable in a class?

When I am trying to initialize the const member variable t with 100. But it's giving me the following error: 11 Answers ...
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Open Source Java Profilers [closed]

What can you guys recommend to use with Java? 12 Answers 12 ...
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Can I mask an input text in a bat file?

I am writing a batch file to execute some other programs. In this case I need to prompt for a password. Do I have any way to mask the input text? I don't need to print ******* characters instead of input characters. Linux's Password prompt behavior (Print nothing while typing) is enough. ...
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What are the advantages of using nullptr?

... conceptually does the same thing for the three pointers (safe pointer initialization): 7 Answers ...
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What does inverse_of do? What SQL does it generate?

I'm trying to get my head around inverse_of and I do not get it. 8 Answers 8 ...