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Factors in R: more than an annoyance?

One of the basic data types in R is factors. In my experience factors are basically a pain and I never use them. I always convert to characters. I feel oddly like I'm missing something. ...
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Getting time elapsed in Objective-C

...NSTimeInterval timeInterval = [start timeIntervalSinceNow]; timeInterval is the difference between start and now, in seconds, with sub-millisecond precision. share | improve this answer |...
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Entity Framework 4 Single() vs First() vs FirstOrDefault()

I'm having a devil of a time finding a comparison of the different ways to query for a single item, and when to use each. 6...
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include antiforgerytoken in ajax post ASP.NET MVC

...jax calls and the Html.AntiForgeryToken() . Using that solution, the token is now being passed: 11 Answers ...
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Can Selenium Webdriver open browser windows silently in background?

... There are a few ways, but it isn't a simple "set a configuration value". Unless you invest in a headless browser, which doesn't suit everyone's requirements, it is a little bit of a hack: How to hide Firefox window (Selenium WebDriver)? and Is it poss...
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Multiprocessing vs Threading Python [duplicate]

...le uses threads, the multiprocessing module uses processes. The difference is that threads run in the same memory space, while processes have separate memory. This makes it a bit harder to share objects between processes with multiprocessing. Since threads use the same memory, precautions have to be...
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what happens when you type in a URL in browser [closed]

... Attention: this is an extremely rough and oversimplified sketch, assuming the simplest possible HTTP request (no HTTPS, no HTTP2, no extras), simplest possible DNS, no proxies, single-stack IPv4, one HTTP request only, a simple HTTP serve...
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Conditions for automatic generation of default/copy/move ctor and copy/move assignment operator?

... functions are declared, but defined as deleted. The default constructor is auto-generated if there is no user-declared constructor (§12.1/5). The copy constructor is auto-generated if there is no user-declared move constructor or move assignment operator (because there are no move constructors o...
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What is the list of valid @SuppressWarnings warning names in Java?

What is the list of valid @SuppressWarnings warning names in Java? 9 Answers 9 ...
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How to identify server IP address in PHP

... Like this for the server ip: $_SERVER['SERVER_ADDR']; and this for the port $_SERVER['SERVER_PORT']; share | improve this ans...