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Best practices for overriding isEqual: and hash

How do you properly override isEqual: in Objective-C? The "catch" seems to be that if two objects are equal (as determined by the isEqual: method), they must have the same hash value. ...
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What should every JavaScript programmer know? [closed]

...they are often hiding the sometimes-ugly details of how JavaScript and the DOM actually work from you. If your aim is to be able to say “I know JavaScript”, then investing a lot of time in a framework is opposed to that. Here are some JavaScript language features that you should know to grok wh...
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Remap values in pandas column with a dict

... It doesn't work for me when if col```` is tuple. The error info is Cannot compare types 'ndarray(dtype=object)' and 'tuple'``` – Pengju Zhao Aug 2 '17 at 4:54 ...
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Implement C# Generic Timeout

...SecondMethod() { Thread.Sleep(5000); } The static method doing the work: static void CallWithTimeout(Action action, int timeoutMilliseconds) { Thread threadToKill = null; Action wrappedAction = () => { threadToKill = Thread.CurrentThr...
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Null or default comparison of generic argument in C#

... Wow, how delightfully obscure! This is definitely the way to go though, kudos. – Nick Farina May 14 '09 at 20:03 14 ...
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How to set selected value of jquery select2?

...ere the second parameter is an object with expected values. UPDATE: This does work, just wanted to note that in the new select2, "a_key" is "text" in a standard select2 object. so: {id: 100, text: 'Lorem Ipsum'} Example: $('#all_contacts').select2('data', {id: '123', text: 'res_data.primary_em...
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Staging Deleted files

... Since Git 2.0.0, git add will also stage file deletions. Git 2.0.0 Docs - git-add < pathspec >… Files to add content from. Fileglobs (e.g. *.c) can be given to add all matching files. Also a leading directory name (e.g. dir to add dir/file1 and dir/file2) can be given to update the ...
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How do I create a category in Xcode 6 or higher?

...hidden everything under Objective-C or I think that they did. I personally don't get why Swift was added, Objective-C is such a beautiful and expressive language once you get to know it... It's Objects on top of C... Perrrfect – unom Aug 27 '14 at 18:07 ...
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Why does C++ not have reflection?

...'s a lot of work to add, and the C++ committee is fairly conservative, and don't spend time on radical new features unless they're sure it'll pay off. (A suggestion for adding a module system similar to .NET assemblies has been made, and while I think there's general consensus that it'd be nice t...
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Get everything after the dash in a string in javascript

What would be the cleanest way of doing this that would work in both IE and firefox. 9 Answers ...