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Array.push() if does not exist?

... it doesn't then just push the item into the array: var newItem = "NEW_ITEM_TO_ARRAY"; var array = ["OLD_ITEM_1", "OLD_ITEM_2"]; array.indexOf(newItem) === -1 ? array.push(newItem) : console.log("This item already exists"); console.log(array) ...
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PHP abstract properties

...cks (say, in the constructor) for the $tablename variable, e.g.: class Foo_Abstract { public final function __construct(/*whatever*/) { if(!isset($this->tablename)) throw new LogicException(get_class($this) . ' must have a $tablename'); } } To enforce this for all derived classes...
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Completion block for popViewController

...where animated { coordinator.animateAlongsideTransition(nil) { _ in completion() } } else { completion() } } func popViewController(animated: Bool, completion: () -> ()) { popViewControllerAnimated(animated) ...
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What is the difference between .text, .value, and .value2?

...ome sort of innate type that you will have to act upon. dynamic x = ws.get_Range("A1").Value2; object y = ws.get_Range("A1").Value2; var z = ws.get_Range("A1").Value2; double d = ws.get_Range("A1").Value2; // Value of a serial is always a double ...
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Detect Safari browser

...ut not "chrome": developers.whatismybrowser.com/useragents/explore/software_name/… – Eric Andrew Lewis Mar 1 '19 at 15:41  |  show 1 more co...
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How to automatically convert strongly typed enum into int?

The a::LOCAL_A is what the strongly typed enum is trying to achieve, but there is a small difference : normal enums can be converted into integer type, while strongly typed enums can not do it without a cast. ...
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Run a Docker image as a container

...must docker commit. You can use the NAME in the commit (e.g. docker commit _NAME_ _imagename_) – Andy Aug 24 '15 at 18:56 9 ...
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Make Bootstrap Popover Appear/Disappear on Hover instead of Click

... placement: 'auto' }).on("mouseenter",function () { var _this = this; // thumbcontainer console.log('thumbcontainer mouseenter') // clear the counter clearTimeout(counter); // Close all other Popovers $('.thumbcontainer').not(_this).popover...
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Delete all documents from index/type without deleting type

... (using your example): curl -XDELETE 'http://localhost:9200/twitter/tweet/_query' -d '{ "query" : { "match_all" : {} } }' Or you could just delete the type: curl -XDELETE http://localhost:9200/twitter/tweet ...
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Why isn't ProjectName-Prefix.pch created automatically in Xcode 6?

...e. Stop writing macros unless there is no other way (such as when you need __FILE__). If you do need macros, put them in a header and include it. The prefix header was necessary for things that are huge and used by nearly everything in the whole system (like Foundation.h). If you have something tha...