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What is the opposite of :hover (on mouse leave)?

Is there any way to do the opposite of :hover using only CSS? As in: if :hover is on Mouse Enter , is there a CSS equivalent to on Mouse Leave ? ...
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Efficiently convert rows to columns in sql server

I'm looking for an efficient way to convert rows to columns in SQL server, I heard that PIVOT is not very fast, and I need to deal with lot of records. ...
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Emacs in Windows

How do you run Emacs in Windows? 20 Answers 20 ...
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How can I add numbers in a Bash script?

I have this Bash script and I had a problem in line 16. How can I take the previous result of line 15 and add it to the variable in line 16? ...
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ctypes - Beginner

I have the task of "wrapping" a c library into a python class. The docs are incredibly vague on this matter. It seems they expect only advanced python users would implement ctypes. Well i'm a beginner in python and need help. ...
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How do I analyze a program's core dump file with GDB when it has command-line parameters?

... 9 Answers 9 Active ...
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Play audio with Python

How can I play audio (it would be like a 1 second sound) from a Python script? 22 Answers ...
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C# 'is' operator performance

I have a program that requires fast performance. Within one of its inner loops, I need to test the type of an object to see whether it inherits from a certain interface. ...
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How do I extract the contents of an rpm?

I have an rpm and I want to treat it like a tarball. I want to extract the contents into a directory so I can inspect the contents. I am familiar with the querying commands of an uninstalled package. I do not simply want a list of the contents of the rpm. i.e. ...
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What is the MySQL JDBC driver connection string?

I am new to JDBC and I am trying to make a connection to a MySQL database. I am using Connector/J driver, but I cant find the JDBC connection string for my Class.forName() method. ...