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How to avoid warning when introducing NAs by coercion

I generally prefer to code R so that I don't get warnings, but I don't know how to avoid getting a warning when using as.numeric to convert a character vector. ...
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RestSharp JSON Parameter Posting

I am trying to make a very basic REST call to my MVC 3 API and the parameters I pass in are not binding to the action method. ...
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What's a quick way to test to see a file exists?

I want to quickly check to see if a file exists in my iPhone app's Documents directory (or any path for that matter). I can enumerate through the directory's files, or I can try to open a specific file. What's the fastest way? I just need to know if the file is there or if it does not exist. ...
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Multiple inputs with same name through POST in php

Is it possible to get multiple inputs of the same name to post and then access them from PHP? The idea is this: I have a form that allows the entry of an indefinite number of physical addresses along with other information. If I simply gave each of those fields the same name across several entries...
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Change date of git tag (or GitHub Release based on it)

I'm adding Releases to my projects on GitHub by adding tags to various commits in the Main branch. 3 Answers ...
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How to change the playing speed of videos in HTML5?

How to change the video play speed in HTML5? I've checked video tag's attributes in w3school but couldn't approach that.Any help would be appreciated! ...
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Javascript Functions and default parameters, not working in IE and Chrome

I created a function like this: 5 Answers 5 ...
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Trying to understand CMTime and CMTimeMake

1) CMTimeMake(1,10) means duration of 1 second and timescale of 10, or 10 frames per second. This means 1s duration of video with 10 frames? ...
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PHP sprintf escaping %

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How to pass parameters to a view

I have a series of buttons which when clicked display a popup menu positioned just below the button. I want to pass the position of button to the view. How can I do that? ...