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Instance variables vs. class variables in Python

I have Python classes, of which I need only one instance at runtime, so it would be sufficient to have the attributes only once per class and not per instance. If there would be more than one instance (which won't happen), all instance should have the same configuration. I wonder which of the follow...
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How to inspect the return value of a function in GDB?

Is it possible to inspect the return value of a function in gdb assuming the return value is not assigned to a variable? ...
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How to git-svn clone the last n revisions from a Subversion repository?

Problem 3 Answers 3 ...
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Change Screen Orientation programmatically using a Button

I think this is implementable since screen rotation behaviour can go up to the application level. 5 Answers ...
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What is the difference between Step Into and Step Over in the Eclipse debugger?

I want to debug the whole flow of a Java program. What is the difference between F5 (step into) and F6 (step over) in eclipse? ...
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Array include any value from another array?

What's the most efficient way to test if an array contains any element from a second array? 5 Answers ...
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Only detect click event on pseudo-element

My code is: 10 Answers 10 ...
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How to pip install a package with min and max version range?

I'm wondering if there's any way to tell pip, specifically in a requirements file, to install a package with both a minimum version ( pip install package>=0.2 ) and a maximum version which should never be installed (theoretical api: pip install package<0.3 ). ...
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Swift Programming: getter/setter in stored property

How do I overwrite the setter of stored property in Swift? 5 Answers 5 ...
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Difference between Array and List in scala

In what cases I should use Array(Buffer) and List(Buffer). Only one difference that I know is that arrays are nonvariant and lists are covariant. But what about performance and some other characteristics? ...