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Check if a div exists with jquery [duplicate]

Yes, I know this has been asked a lot. But, it confuses me, since the results on google for this search show different methods (listed below) ...
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How to get the selected radio button’s value?

I’m having some strange problem with my JS program. I had this working properly but for some reason it’s no longer working. I just want to find the value of the radio button (which one is selected) and return it to a variable. For some reason it keeps returning undefined . ...
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How do I create a Bash alias?

I'm on OSX and I need to put something like this, alias blah="/usr/bin/blah" in a config file but I don't know where the config file is. ...
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Cancel split window in Vim

I have split my windows horizontally. Now how can I return to normal mode, i.e. no split window just one window without cancelling all of my open windows. I have 5 and do not want to "quit", just want to get out of split window. ...
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eval command in Bash and its typical uses

After reading the bash man pages and with respect to this post . 10 Answers 10 ...
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Associating enums with strings in C#

I know the following is not possible because the Enumeration's type has to be an int 32 Answers ...
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Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?

I've been wrestling with this for a while and can't quite figure out what's happening. I have a Card entity which contains Sides (usually 2) - and both Cards and Sides have a Stage. I'm using EF Codefirst migrations and the migrations are failing with this error: ...
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Measuring execution time of a function in C++

I want to find out how much time a certain function takes in my C++ program to execute on Linux . Afterwards, I want to make a speed comparison . I saw several time function but ended up with this from boost. Chrono: ...
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Replace input type=file by an image

Like a lot of people, I'd like to customize the ugly input type=file , and I know that it can't be done without some hacks and/or javascript . But, the thing is that in my case the upload file buttons are just for uploading images ( jpeg|jpg|png|gif ), so I was wondering if I could use a " clickab...
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Perform commands over ssh with Python

I'm writing a script to automate some command line commands in Python. At the moment I'm doing calls thus: 13 Answers ...