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What is the purpose of the '@' symbol in CSS?

I just stumbled across this question and I noticed the user is using some notation I've never seen before: 5 Answers ...
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What does GitHub for Windows' “sync” do?

With GitHub for Windows, you can "publish" a branch, and then "sync" that branch to GitHub. 4 Answers ...
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CSRF protection with CORS Origin header vs. CSRF token

This question is about protecting against Cross Site Request Forgery attacks only. 2 Answers ...
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MySQL select with CONCAT condition

I'm trying to compile this in my mind.. i have a table with firstname and lastname fields and i have a string like "Bob Jones" or "Bob Michael Jones" and several others. ...
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The type must be a reference type in order to use it as parameter 'T' in the generic type or method

I'm getting deeper into generics and now have a situation I need help with. I get a compile error on the 'Derived' class below as shown in the subject title. I see many other posts similar to this one but I'm not seeing the relationship. Can someone tell me how to resolve this? ...
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C# DateTime to UTC Time without changing the time

How would I convert a preexisting datetime to UTC time without changing the actual time. 4 Answers ...
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What is the difference between _tmain() and main() in C++?

If I run my C++ application with the following main() method everything is OK: 5 Answers ...
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How to find out which view is focused?

I need to find out if any view is focused inside an Activity and what view it is. How to do this? 6 Answers ...
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Difference between MVC 5 Project and Web Api Project

I am new to ASP.NET MVC and Web API and trying to get the basics. AFAIK, we have project templates in VS 2013, named as MVC , Web API and Both of them together . ...
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How to do error logging in CodeIgniter (PHP)

I want error logging in PHP CodeIgniter. How do I enable error logging? 5 Answers 5 ...