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What do the numbers in a version typically represent (i.e. v1.9.0.1)?

Maybe this is a silly question, but I've always assumed each number delineated by a period represented a single component of the software. If that's true, do they ever represent something different? I'd like to start assigning versions to the different builds of my software, but I'm not really sure...
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How do I capture SIGINT in Python?

I'm working on a python script that starts several processes and database connections. Every now and then I want to kill the script with a Ctrl + C signal, and I'd like to do some cleanup. ...
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vertical align middle in

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Order of event handler execution

If I set up multiple event handlers, like so: 10 Answers 10 ...
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Split data frame string column into multiple columns

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JSON, REST, SOAP, WSDL, and SOA: How do they all link together

Currently doing some exams and I'm struggling through some concepts. These have all been 'mentioned' in my notes really but I didn't really understand how they all linked together. As far as my understanding is: ...
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Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers

I have a Numpy array consisting of a list of lists, representing a two-dimensional array with row labels and column names as shown below: ...
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Cocoa Touch: How To Change UIView's Border Color And Thickness?

I saw in the inspector that I can change the background color, but I'd like to also change the border color and thickness, is this possible? ...
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How to convert CSV file to multiline JSON?

Here's my code, really simple stuff... 10 Answers 10 ...
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IsNothing versus Is Nothing

Does anyone here use VB.NET and have a strong preference for or against using IsNothing as opposed to Is Nothing (for example, If IsNothing(anObject) or If anObject Is Nothing... )? If so, why? ...