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Extending from two classes

How can I do this: 13 Answers 13 ...
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Why do people hate SQL cursors so much? [closed]

I can understand wanting to avoid having to use a cursor due to the overhead and inconvenience, but it looks like there's some serious cursor-phobia-mania going on where people are going to great lengths to avoid having to use one. ...
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What exactly are DLL files, and how do they work?

How exactly do DLL files work? There seems to be an awful lot of them, but I don't know what they are or how they work. 9 A...
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What's the best way of implementing a thread-safe Dictionary?

I was able to implement a thread-safe Dictionary in C# by deriving from IDictionary and defining a private SyncRoot object: ...
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In Scala, what exactly does 'val a: A = _' (underscore) mean?

What exactly does val a: A = _ initialize a value to? Is this a typed null? Thanks. 2 Answers ...
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C# 3.0 auto-properties — useful or not? [closed]

Note: This was posted when I was starting out C#. With 2014 knowledge, I can truly say that auto-properties are among the best things that ever happened to the C# language. ...
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Difference between jQuery `click`, `bind`, `live`, `delegate`, `trigger` and `on` functions (with an

I have read the documentation of each function on jQuery official website , but there is no such comparison listings between below functions: ...
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How do I get current date/time on the Windows command line in a suitable format for usage in a file/

Update: Now that it's 2016 I'd use PowerShell for this unless there's a really compelling backwards-compatible reason for it, particularly because of the regional settings issue with using date . See @npocmaka's https://stackoverflow.com/a/19799236/8479 ...
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Why do we use Base64?

Wikipedia says 12 Answers 12 ...
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What is the difference between return and return()?

I tested the above code in Chrome's console, and both returned 1 . 9 Answers 9 ...