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Flattening a shallow list in Python [duplicate]

...st of iterables with a list comprehension, or failing that, what would you all consider to be the best way to flatten a shallow list like this, balancing performance and readability? ...
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What is the difference between a stored procedure and a view?

...O Thus, if I want to query profile_description by user_id in the future, all I have to do is: SELECT profile_description FROM vw_user_profile WHERE user_id = @ID That code could be used in a stored procedure like: CREATE PROCEDURE dbo.getDesc @ID int AS BEGIN SELECT profile_description...
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TypeError: method() takes 1 positional argument but 2 were given

...- it's just that the first one is implicit, from the point of view of the caller. This is because most methods do some work with the object they're called on, so there needs to be some way for that object to be referred to inside the method. By convention, this first argument is called self inside ...
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Get name of current script in Python

...hen used in the main module, this is the name of the script that was originally invoked. If you want to omit the directory part (which might be present), you can use os.path.basename(__file__). share | ...
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How to implement WiX installer upgrade?

At work we use WiX for building installation packages. We want that installation of product X would result in uninstall of the previous version of that product on that machine. ...
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What is the difference between declarative and procedural programming paradigms?

...paradigm: C (and most other legacy languages) PHP, mostly In some sense, all major languages Object-Oriented It typically refers to languages that exhibit a hierarchy of types that inherit both methods and state from base types to derived types, but also includes the unusual prototype-based Jav...
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What is the difference between String.slice and String.substring?

... Feb 11 '10 at 10:36 Daniel VassalloDaniel Vassallo 301k6666 gold badges475475 silver badges424424 bronze badges ...
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Converting bool to text in C++

...ch shows you the console output and explains more about the API. Additionally using std::boolalpha will modify the global state of std::cout, you may want to restore the original behavior go here for more info on restoring the state of std::cout. ...
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Insert Update trigger how to determine if insert or update

I need to write an Insert, Update Trigger on table A which will delete all rows from table B whose one column (say Desc) has values like the value inserted/updated in the table A's column (say Col1). How would I go around writing it so that I can handle both Update and Insert cases. How would I dete...
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read subprocess stdout line by line

My python script uses subprocess to call a linux utility that is very noisy. I want to store all of the output to a log file and show some of it to the user. I thought the following would work, but the output doesn't show up in my application until the utility has produced a significant amount of ...