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How to create NS_OPTIONS-style bitmask enumerations in Swift?

...tocol extensions take care of most of the boilerplate for these, which are now imported as a struct that conforms to OptionSetType. (RawOptionSetType has disappeared as of Swift 2 beta 2.) The declaration is far simpler: struct MyOptions : OptionSetType { let rawValue: Int static let None ...
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Why can't variable names start with numbers?

... It's a convention now, but it started out as a technical requirement. In the old days, parsers of languages such as FORTRAN or BASIC did not require the uses of spaces. So, basically, the following are identical: 10 V1=100 20 PRINT V1 and ...
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Why does “pip install” inside Python raise a SyntaxError?

... I know for me I had to do this from the command line (not python command line). This was after changing directory to the location of python.exe and then needed to put the file type on pip3. In my case I was after requests for HT...
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How to convert an address into a Google Maps Link (NOT MAP)

...: maps.google.com/?ll=38.882147,-76.99017 UPDATE As of year 2017, Google now has an official way to create cross-platform Google Maps URLs: https://developers.google.com/maps/documentation/urls/guide You can use links like https://www.google.com/maps/search/?api=1&query=1200%20Pennsylvania...
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Inspect attached event handlers for any DOM element

... There now is an extension for Firebug called EventBug and reportedly a similar feature in chrome/safari. I'll also link to a more popular discussion on this: stackoverflow.com/questions/446892/… – Nickolay ...
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what is difference between success and .done() method of $.ajax

...ange is for compatibility with jQuery 1.5's deferred object. Deferred (and now Promise, which has full native browser support in Chrome and FX) allow you to chain asynchronous actions: $.ajax("parent"). done(function(p) { return $.ajax("child/" + p.id); }). done(someOtherDeferredFunction). ...
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Why use jQuery on() instead of click()

...r but don't exist when the DOM is first loaded. The reason that live() is now depreciated is because it was poorly implemented. In order to use live(), you had to be able to select at least one element in the DOM initially (I believe). It also caused a copy of the function to run to be bound to e...
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How remove word wrap from textarea?

...ut you can set wrap="soft" to explicitly disable wrap: <textarea name="nowrap" cols="30" rows="3" wrap="soft"></textarea> EDIT: The "wrap" attribute is not officially supported. I got it from the german SELFHTML page (an english source is here) that says IE 4.0 and Netscape 2.0 suppor...
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Using ZXing to create an Android barcode scanning app [duplicate]

...lementing the code until I found some website (I can't find it again right now) that explained that you need to include the package name in the name of the intent.putExtra. It would pull up the application, but it wouldn't recognize any barcodes, and when I changed it from. intent.putExtra("SCAN_M...
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How to remove application from app listings on Android Developer Console

...e that new version before publishing it. A reference Update, 2016 you can now filter out unpublished or draft apps from your listing. Unpublish option can be found in the header area, beside PUBLISHED text. UPDATE 2020 Due to changes in the new play console, the unpublish option was moved to a ...