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What's the need of array with zero elements?

In the Linux kernel code I found the following thing which I can not understand. 5 Answers ...
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List changes unexpectedly after assignment. How do I clone or copy it to prevent this?

While using new_list = my_list , any modifications to new_list changes my_list everytime. Why is this, and how can I clone or copy the list to prevent it? ...
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How to sum a variable by group

I have a data frame with two columns. First column contains categories such as "First", "Second", "Third", and the second column has numbers that represent the number of times I saw the specific groups from "Category". ...
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Can I click a button programmatically for a predefined intent?

I need the button click of the intent ACTION_SEND. Here there is no need of displaying UI. Can I get the "Send" button click from the MMS-SMSProvider in Android? ...
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Executing an EXE file using a PowerShell script

I'm trying to execute an EXE file using a PowerShell script. If I use the command line it works without a problem (first I supply the name of the executable and series of parameters to invoke it): ...
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jQuery UI Sortable Position

How do I track what position an element is when its position in a sortable list changes? 4 Answers ...
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Equivalent C++ to Python generator pattern

I've got some example Python code that I need to mimic in C++. I do not require any specific solution (such as co-routine based yield solutions, although they would be acceptable answers as well), I simply need to reproduce the semantics in some manner. ...
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How to replace a single word under cursor?

How do I replace a word under the cursor in Vim. 5 Answers 5 ...
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How to construct a std::string from a std::vector?

Short of (the obvious) building a C style string first then using that to create a std::string, is there a quicker/alternative/"better" way to initialize a string from a vector of chars? ...
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Convert datetime object to a String of date only in Python

I see a lot on converting a date string to an datetime object in Python, but I want to go the other way. I've got 11 A...