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Get JavaScript object from array of objects by value of property [duplicate]

...I wrote that "methods like find() and arrow functions are not supported by all browsers". – Michał Perłakowski Sep 22 '16 at 13:43 4 ...
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How do I check if file exists in jQuery or pure JavaScript?

...n('HEAD', url, false); http.send(); return http.status!=404; } Small changes and it could check for status HTTP status code 200 (success), instead. EDIT 2: Since sync XMLHttpRequest is deprecated, you can add a utility method like this to do it async: function executeIfFileExist(src, cal...
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What is “Orthogonality”?

...gn, operations do not have side effects; each action (whether it's an API call, a macro invocation, or a language operation) changes just one thing without affecting others. There is one and only one way to change each property of whatever system you are controlling. ...
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Unresolved external symbol on static class members

...als here: For me, the thing that I forgot was to mark my class definition __declspec(dllexport), and when called from another class (outside that class's dll's boundaries), I of course got the my unresolved external error. Still, easy to forget when you're changing an internal helper class to a one...
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Swift alert view with OK and Cancel: which button tapped?

... use it: var refreshAlert = UIAlertController(title: "Refresh", message: "All data will be lost.", preferredStyle: UIAlertControllerStyle.Alert) refreshAlert.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in print("Handle Ok logic here") })) refreshA...
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How to ssh to vagrant without actually running “vagrant ssh”?

...sh" because it's -c option didn't pass on arguments properly. This is basically what it does (there might be more, but it works fine this way) #!/bin/sh PORT=$(vagrant ssh-config | grep Port | grep -o '[0-9]\+') ssh -q \ -o UserKnownHostsFile=/dev/null \ -o StrictHostKeyChecking=no \ -i...
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How to secure MongoDB with username and password

...d({}) Long answer: Read this if you want to properly understand. It's really simple. I'll dumb the following down https://docs.mongodb.com/manual/tutorial/enable-authentication/ If you want to learn more about what the roles actually do read more here: https://docs.mongodb.com/manual/reference/b...
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Accessing console and devtools of extension's background.js

...updated the picture. The triangle has been removed, that step now automatically happens when Developer mode is activated. – Rob W Oct 23 '14 at 9:28 ...
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Spring: @Component versus @Bean

...xplicitly declare a single bean, rather than letting Spring do it automatically as above. It decouples the declaration of the bean from the class definition, and lets you create and configure beans exactly how you choose. To answer your question... would it have been possible to re-use the @Co...
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test a file upload using rspec - rails

... You can use fixture_file_upload method to test file uploading: Put your test file in "{Rails.root}/spec/fixtures/files" directory before :each do @file = fixture_file_upload('files/test_lic.xml', 'text/xml') end it "can upload a license" do...