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Checking if a key exists in a JavaScript object?

...result = array["Impression"] === undefined The result was 168,270,439 ±0.13 ops/sec 0.02% slower Accessing elements directly (object style) var result = array.Impression === undefined; The result was 168,303,172 ±0.20% fastest EDIT: What is the reason to assign to a property the unde...
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How do I do a multi-line string in node.js?

...ference/… for details on template strings. – user3413723 Dec 11 '15 at 10:48 2 Might want to no...
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Why is setTimeout(fn, 0) sometimes useful?

...he trick works. – staticsan Oct 16 '13 at 6:36 2 @DavidMulder, does it means browser parse css an...
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Sound effects in JavaScript / HTML5

...dow.load(). – Pietro Polsinelli Feb 13 '13 at 16:00  |  show 11 more comments ...
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Rolling back local and remote git repository by 1 commit

...1: Using git push --force-with-lease (that I present here, introduced in 2013 with Git 1.8.5) is safer. See Schwern's answer for illustration. What if somebody has already pulled the repo? What would I do then? Then I would suggest something that doesn't rewrite the history: git revert lo...
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Input placeholders for Internet Explorer

...t: <span style="position: relative;"> <input id="placeholder1314588474481" name="text" maxLength="6" type="text" placeholder="Hi Mom"> <label style="font: 0.75em/normal sans-serif; left: 5px; top: 3px; width: 147px; height: 15px; color: rgb(186, 186, 186); position: absolute...
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How to get distinct values for non-key column fields in Laravel?

... 113 You should use groupby. In Query Builder you can do it this way: $users = DB::table('users') ...
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notifyDataSetChange not working from custom adapter

... answered Mar 15 '13 at 8:28 tolgaptolgap 8,8631010 gold badges4141 silver badges6262 bronze badges ...
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Is there a printf converter to print in binary format?

.... – chux - Reinstate Monica Nov 12 '13 at 19:25 1 Could someone please elaborate on the logic beh...
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Convert string to variable name in JavaScript

... | edited Jun 14 '13 at 16:39 yckart 26.2k77 gold badges109109 silver badges119119 bronze badges ...