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How to properly document S4 class slots using Roxygen2?

... answer for Roxygen2 5.0.1, current as of 6.0.1 For S4, the best practice now is documenting using the @slot tag: #' The title for my S4 class that extends \code{"character"} class. #' #' Some details about this class and my plans for it in the body. #' #' @slot myslot1 A logical keeping track of ...
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UIView frame, bounds and center

I would like to know how to use these properties in the right manner. 6 Answers 6 ...
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How to make a whole 'div' clickable in html and css without JavaScript? [duplicate]

..., having a <div> inside an <a> tag is valid: "the a element is now transparent; that is, an instance of the a element is now allowed to also contain flow content". dev.w3.org/html5/markup/a.html#a-changes – Damien Jan 3 '13 at 9:25 ...
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What does “error: option --single-version-externally-managed not recognized” indicate?

...ding PyObjC and astropy ). I've never seen this error before, but it's now also showing up on travis-ci builds for which nothing has changed. ...
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explicit casting from super class to subclass

... you're essentially telling the compiler "trust me. I'm a professional, I know what I'm doing and I know that although you can't guarantee it, I'm telling you that this animal variable is definitely going to be a dog." Since the animal isn't actually a dog (it's an animal, you could do Animal anima...
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Should I use the Reply-To header when sending emails as a service to others?

... have to forward it, but you can always add a hidden multipart. Everybody knows how to forward to another address. – Aridane Álamo Dec 13 '16 at 16:47 2 ...
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console.log timestamps in Chrome?

... As @Krzysztof Wolny pointed out, this is now built-in to Chrome 35 DevTools. (Yay!) Enable by opening developer tools (e.g. F12 or "Inspect Element"), click on the "gear" to view settings, then check the "Show timestamps" checkbox in the "Console" section. !Enable t...
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Homebrew install specific version of formula?

...Library/Formula/postgresql.rb $ brew install postgresql # … installing Now that the older postgresql version is installed, we can re-install the latest formula in order to keep our repository clean: $ git checkout -- Library/Formula/postgresql.rb brew switch is your friend to change between t...
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How to determine if a number is a prime with regex?

...ce again the returning of the negation of the match result. Do you see it now? It's unbelievably tricky (and computationally expensive!) but it's also kind of simple at the same time, once you get it. :-) I can elaborate if you have further questions, like on how regex parsing actually works. But ...
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Why is Go so slow (compared to Java)?

...fically, the goroutine scheduler isn't pre-emptive). Beyond that, I don't know Google's plans, whether the g compilers will ever be fiercely optimising, or if only gccgo will. – Steve Jessop Apr 24 '10 at 17:46 ...