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What does the “@” symbol mean in reference to lists in Haskell?

...eUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
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Check if my app has a new version on AppStore

...fier"]; NSURL* url = [NSURL URLWithString:[NSString stringWithFormat:@"http://itunes.apple.com/lookup?bundleId=%@", appID]]; NSData* data = [NSData dataWithContentsOfURL:url]; NSDictionary* lookup = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil]; if ([lookup[@"res...
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How do you write a migration to rename an ActiveRecord model and its table in Rails?

... And rename your files etc, manually as other answers here describe. See: http://api.rubyonrails.org/classes/ActiveRecord/Migration.html Make sure you can rollback and roll forward after you write this migration. It can get tricky if you get something wrong and get stuck with a migration that trie...
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Are static class variables possible in Python?

...ce. class C: @staticmethod def f(arg1, arg2, ...): ... @beidy recommends classmethods over staticmethod, as the method then receives the class type as the first argument, but I'm still a little fuzzy on the advantages of this approach over staticmethod. If you are too, then it probably do...
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Is it possible to implement dynamic getters/setters in JavaScript?

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How do you comment out code in PowerShell?

...Copyright 2011 - Jean Paul Blanc/Silogix .LINK Script posted over: http://silogix.fr .EXAMPLE Example 1 .EXAMPLE Example 2 #> Function blabla {} For more explanation about .SYNOPSIS and .* see about_Comment_Based_Help. Remark: These function comments are used by the Get-Help Cm...
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Make var_dump look pretty

...json_encode($theResult); Copy the result you get into the JSON Editor at http://jsoneditoronline.org/ just copy it into the left side pane, click Copy > and it pretty prints the JSON in a really nice tree format. To each their own, but hopefully this helps some others have one more nice option...
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Why can I access TypeScript private members when I shouldn't be able to?

...ith the type checking, the privacy of members are only enforced within the compiler. A private property is implemented as a regular property, and code outside the class is not allowed to access it. To make something truly private inside the class, it can't be a member of the class, it would be a l...
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How do you write tests for the argparse portion of a python module? [closed]

...n.org/3/library/unittest.mock.html for more detail. See also stackoverflow.com/questions/6271947/… for an example of mocking stdin. (stderr should be similar) – BryCoBat Jul 23 '15 at 11:56 ...
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Is there a JavaScript / jQuery DOM change listener?

...are content script add "tabs" permission. background.js var rxLookfor = /^https?:\/\/(www\.)?google\.(com|\w\w(\.\w\w)?)\/.*?[?#&]q=/; chrome.tabs.onUpdated.addListener(function (tabId, changeInfo, tab) { if (rxLookfor.test(changeInfo.url)) { chrome.tabs.sendMessage(tabId, 'url-update'); ...