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Creating a singleton in Python

This question is not for the discussion of whether or not the singleton design pattern is desirable, is an anti-pattern, or for any religious wars, but to discuss how this pattern is best implemented in Python in such a way that is most pythonic. In this instance I define 'most pythonic' to mean tha...
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Is it possible to open a Windows Explorer window from PowerShell?

I'm sure this must be possible, but I can't find out how to do it. 10 Answers 10 ...
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How to convert ASCII code (0-255) to its corresponding character?

How can I convert, in Java, the ASCII code (which is an integer from [0, 255] range) to its corresponding ASCII character? ...
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Delete column from SQLite table

I have a problem: I need to delete a column from my SQLite database. I wrote this query 10 Answers ...
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Running a cron every 30 seconds

Ok so I have a cron that I need to run every 30 seconds. 19 Answers 19 ...
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Getting Http Status code number (200, 301, 404, etc.) from HttpWebRequest and HttpWebResponse

I am trying to get the HTTP status code number from the HttpWebResponse object returned from a HttpWebRequest . I was hoping to get the actual numbers (200, 301,302, 404, etc.) rather than the text description. ("Ok", "MovedPermanently", etc.) Is the number buried in a property somewhere in th...
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How to rotate portrait/landscape Android emulator? [duplicate]

I am new to Android development. I know if you change a android phone from portrait to landscape sometimes the app relays its self out on the screen.. so how do I simulate rotating a phone with the emulator? On the Blackberry emulators there's a button in the menu to turn the phone, but I can't f...
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UITableView - scroll to the top

In my table view I have to scroll to the top. But I cannot guarantee that the first object is going to be section 0, row 0. May be that my table view will start from section number 5. ...
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Replacing blank values (white space) with NaN in pandas

I want to find all values in a Pandas dataframe that contain whitespace (any arbitrary amount) and replace those values with NaNs. ...
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How to check if a view controller is presented modally or pushed on a navigation stack?

How can I, in my view controller code, differentiate between: 16 Answers 16 ...