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How do I make class methods / properties in Swift?

... They are called type properties and type methods and you use the class or static keywords. class Foo { var name: String? // instance property static var all = [Foo]() // static type property class var comp: Int { // computed ...
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Where does Java's String constant pool live, the heap or the stack?

I know the concept of a constants pool and the String constant pool used by JVMs to handle String literals. But I don't know which type of memory is used by the JVM to store String constant literals. The stack or the heap? Since its a literal which is not associated with any instance I would assume ...
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VBA - how to conditionally skip a for loop iteration

...er an array. What I want to do is test for a certain condition in the loop and skip to the next iteration if true: 6 Answer...
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NSUserDefaults - How to tell if a key exists

I'm working on a small iPhone app, and I am using NSUserDefaults as my data persistence. It only has to keep track of a few things, such as some names and some numbers so I figure I might as well keep it simple. ...
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What exactly is Hot Module Replacement in Webpack?

...tal feature. HMR is a way of exchanging modules in a running application (and adding/removing modules). You basically can update changed modules without a full page reload. Documentation Prerequirements: Using Plugins: https://webpack.js.org/concepts/plugins/ Code Splitting: https://webpack.js....
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How do I check for null values in JavaScript?

... !user){ Which will check for empty strings (""), null, undefined, false and the numbers 0 and NaN Please note that if you are specifically checking for numbers it is a common mistake to miss 0 with this method, and num !== 0 is preferred (or num !== -1 or ~num (hacky code that also checks agains...
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JavaScript style for optional callbacks

...ave some functions which occasionally (not always) will receive a callback and run it. Is checking if the callback is defined/function a good style or is there a better way? ...
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White space showing up on right side of page when background image should extend full length of page

...flow-x: hidden; } into your CSS at the very top above the other classes and it seemed to fix your issue. Your updated .css file is available here share | improve this answer | ...
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How to remove all null elements from a ArrayList or String Array?

... For Java 8 or later, see @MarcG's answer below. – Andy Thomas Feb 6 '16 at 15:16 2 @Hemanth Ca...
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How to implement common bash idioms in Python? [closed]

...y textfile manipulation through a bunch of badly remembered AWK, sed, Bash and a tiny bit of Perl. 17 Answers ...