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Get file name and extension in Ruby

I'm working on a program to download a video from YouTube, convert it to MP3 and create a directory structure for the files. ...
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MongoDB aggregation framework match OR

Is it possible to do an OR in the $match? 2 Answers 2 ...
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Insert text with single quotes in PostgreSQL

... String literals Escaping single quotes ' by doubling them up -> '' is the standard way and works of course: 'user's log' -- incorrect syntax (unbalanced quote) 'user''s log' In old versions or if you still run with sta...
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Having a UITextField in a UITableViewCell

I'm trying to do that for a couple of days now, and after reading tons of messages of people trying to do that too, I'm still unable to have a fully working UITextField in some of my UITableViewCells , just like in this example: ...
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How can I handle R CMD check “no visible binding for global variable” notes when my ggplot2 syntax i

EDIT: Hadley Wickham points out that I misspoke. R CMD check is throwing NOTES, not Warnings. I'm terribly sorry for the confusion. It was my oversight. ...
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“unrecognized selector sent to instance” error in Objective-C

I created a button and added an action for it, but as soon as it invoked, I got this error: 38 Answers ...
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What is Model in ModelAndView from Spring MVC?

Having this basic function 7 Answers 7 ...
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jQuery posting valid json in request body

So according to the jQuery Ajax docs , it serializes data in the form of a query string when sending requests, but setting processData:false should allow me to send actual JSON in the body. Unfortunately I'm having a hard time determining first, if this is happening and 2nd what the object looks...
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Difference between addSubview and insertSubview in UIView class

What is the difference between addSubview and insertSubView methods when a view is added programmatically? 4 Answers ...
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C++ inheritance - inaccessible base?

...be unable to use a base class as a function parameter, have I messed up my inheritance? 2 Answers ...