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What's the need of array with zero elements?

...n the Linux kernel code I found the following thing which I can not understand. 5 Answers ...
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What is the real overhead of try/catch in C#?

So, I know that try/catch does add some overhead and therefore isn't a good way of controlling process flow, but where does this overhead come from and what is it's actual impact? ...
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Regex that accepts only numbers (0-9) and NO characters [duplicate]

I need a regex that will accept only digits from 0-9 and nothing else. No letters, no characters. 1 Answer ...
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What does “Memory allocated at compile time” really mean?

In programming languages like C and C++, people often refer to static and dynamic memory allocation. I understand the concept but the phrase "All memory was allocated (reserved) during compile time" always confuses me. ...
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Re-enabling window.alert in Chrome

I accidently checked the "disable alerts from this site" box in Chrome, and now I cannot get any window.alert to work on my localhost. ...
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How do you validate a URL with a regular expression in Python?

I'm building an app on Google App Engine. I'm incredibly new to Python and have been beating my head against the following problem for the past 3 days. ...
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Javascript date.getYear() returns 111 in 2011? [duplicate]

... have this javascript for automatically setting a date filter to the first and last day of the previous month: 3 Answers ...
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What is the difference D3 datum vs. data?

Can someone please explain the difference between datum() and data() in D3.js? I see both being used and I am not sure why you should choose one over the other? ...
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What is a lambda expression in C++11?

... The problem C++ includes useful generic functions like std::for_each and std::transform, which can be very handy. Unfortunately they can also be quite cumbersome to use, particularly if the functor you would like to apply is unique to the particular function. #include <algorithm> #inclu...
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PCH File in Xcode 6

... Add the pch file which is under Others in File-New...and don't forget to add it to your LLVM6.0 - Language section of Build Settings as Project/whateveryounamedyourpchfile.pch share | ...