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Difference between `data` and `newtype` in Haskell

...e. In particular, data introduces a type that is "lifted", meaning, essentially, that it has an additional way to evaluate to a bottom value. Since there's no additional constructor at runtime with newtype, this property doesn't hold. That extra pointer in the Book to (,) constructor allows us to ...
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Emacs in Windows

... of emacsclient that starts the Emacs server if no server is running (open all your files in the same Emacs window) it includes several useful packages such as Nxml it has a Windows installer or you can build it from sources And concerning XEmacs, according to this post by Steve Yegge: To summ...
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How to specify an array of objects as a parameter or return value in JSDoc?

...cific what you mean by JSDoc - this is a generic term covering pretty much all the JavaDoc-style documentation tools for JavaScript. The syntax you used for array of strings looks like the one supported by Google Closure Compiler. Using this, an array of Objects would be: /** * @param {Array.<Ob...
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Error: Argument is not a function, got undefined

... All I had to do to get it working was the second suggestion (i.e. set ng-app="myApp"). If I removed the [], I got another error. – Jason Jul 8 '13 at 7:38 ...
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How big should a UIBarButtonItem image be?

...n "about 20x20" though. If you use an image of exactly 20x20px it will actually not map 1:1, and the button won't be square. – Clafou Jul 22 '12 at 22:24 1 ...
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SQL update fields of one table from fields of another one

... The question is asking about how to do it without specifying all the column names. (And I am too.) – cluesque Jun 6 '12 at 16:29 2 ...
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Is it possible to allow didSet to be called during initialization in Swift?

...someProperty as type: AnyObject! (an implicitly unwrapped optional), you allow self to fully initialize without someProperty being set. When you call setSomeProperty(someProperty) you're calling an equivalent of self.setSomeProperty(someProperty). Normally you wouldn't be able to do this b...
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“Items collection must be empty before using ItemsSource.”

...wise you can spend a lot of time looking at ItemSource's etc only to eventually find that its caused by a small typo. – pjm Nov 21 '16 at 12:31 ...
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How to convert int to NSString?

... @DielsonSales some objects don't have stringValue, but all have description - so as a good practice it's better to get used to using description (NSNumber does, no need to worry here). Try this (description will print the date, but stringValue will crash): NSNumber *test = (id)[N...
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Is there a VB.NET equivalent of C# out parameters?

...here is no equivalent of the out keyword in VB. However, VB does automatically initialise all local variables in a method, so you can use ByRef without needing to explicitly initialise the variable first. Example: Sub Main() Dim y As Integer Test(y) End Sub Sub Test(ByRef x As Integer) x =...