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Overriding == operator. How to compare to null? [duplicate]

There is probably an easy answer to this...but it seems to be eluding me. Here is a simplified example: 9 Answers ...
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Error inflating class fragment

... 39 Answers 39 Active ...
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How to concatenate strings in django templates?

I want to concatenate a string in a Django template tag, like: 12 Answers 12 ...
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Define: What is a HashSet?

HashSet The C# HashSet data structure was introduced in the .NET Framework 3.5. A full list of the implemented members can be found at the HashSet MSDN page. ...
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C++: Rounding up to the nearest multiple of a number

OK - I'm almost embarrassed posting this here (and I will delete if anyone votes to close) as it seems like a basic question. ...
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How to retrieve absolute path given relative

Is there a command to retrieve the absolute path given the relative path? 21 Answers 2...
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What is the difference between “git branch” and “git checkout -b”?

I used git checkout -b to create a new branch. I think that git branch does the same thing. How do these two commands differ, if they differ at all? ...
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How to export a mysql database using Command Prompt?

I have a database that is quite large so I want to export it using Command Prompt but I don't know how to. 16 Answers ...
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How to install and run phpize

I have been meaning to install ffmpeg as an extension to my PHP setup. So before I can install it, I need to phpize it. I installed php5-dev by sudo apt-get install php5-dev . But now when I run phpize I get the following error : ...
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SQL Server Management Studio, how to get execution time down to milliseconds

When I submit a batch (e.g., perform a query) in SSMS, I see the time it took to execute in the status bar. Is it possible to configure SSMS to show the query time with millisecond resolution? ...