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Reshaping data.frame from wide to long format

I have some trouble to convert my data.frame from a wide table to a long table. At the moment it looks like this: 9 Answe...
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How can I select an element with multiple classes in jQuery?

I want to select all the elements that have the two classes a and b . 13 Answers 13...
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Django: multiple models in one template using forms [closed]

I'm building a support ticket tracking app and have a few models I'd like to create from one page. Tickets belong to a Customer via a ForeignKey. Notes belong to Tickets via a ForeignKey as well. I'd like to have the option of selecting a Customer (that's a whole separate project) OR creating a new ...
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byte[] to hex string [duplicate]

How do I convert a byte[] to a string ? Every time I attempt it, I get 19 Answers ...
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Using GCC to produce readable assembly?

I was wondering how to use GCC on my C source file to dump a mnemonic version of the machine code so I could see what my code was being compiled into. You can do this with Java but I haven't been able to find a way with GCC. ...
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Legality of COW std::string implementation in C++11

It had been my understanding that copy-on-write is not a viable way to implement a conforming std::string in C++11, but when it came up in discussion recently I found myself unable to directly support that statement. ...
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Catch Ctrl-C in C

How does one catch Ctrl + C in C? 9 Answers 9 ...
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How to select where ID in Array Rails ActiveRecord without exception

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Specifically, what's dangerous about casting the result of malloc?

...e people start marking this a dup, I've read all the following, none of which provide the answer I'm looking for: 6 Answers...
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How to write log base(2) in c/c++

Is there any way to write log(base 2) function? 14 Answers 14 ...