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NSObject +load and +initialize - What do they do?

I'm interested in understanding the circumstances leading a developer to override +initialize or +load. Documentation makes it clear these methods are called for you by the Objective-C runtime, but that's really all that is clear from the documentation of those methods. :-) ...
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Is there any haskell function to concatenate list with separator?

... similarly, only that the strings are imploded using the newline character and that a newline character is also added to the end. (This makes it useful for serializing text files, which must per POSIX standard end with a trailing newline) ...
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How to check type of files without extensions in python?

I have a folder full of files and they don't have an extension. How can I check file types? I want to check the file type and change the filename accordingly. Let's assume a function filetype(x) returns a file type like png . I want to do this: ...
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What's the difference between $evalAsync and $timeout in AngularJS?

I've been using AngularJS for a little while now, and have found the need to use $timeout every once in a while (Seems to usually be to init a jQuery plugin). ...
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How do browsers pause/change Javascript when tab or window is not active?

...st is quite CPU intensive. requestAnimationFrame is not supported by IE 9- and Opera 12-. The test logs the actual time it takes for a setInterval and requestAnimationFrame to run in different browsers, and gives you the results in the form of a distribution. You can change the number of millisecon...
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How to uninstall a Windows Service when there is no executable for it left on the system?

...e Windows Resource Kit) by running the following in an "administrator" command prompt: sc.exe delete <service name> where <service name> is the name of the service itself as you see it in the service management console, not of the exe. You can find sc.exe in the System folder and it ...
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How do you track record relations in NoSQL?

I am trying to figure out the equivalent of foreign keys and indexes in NoSQL KVP or Document databases. Since there are no pivotal tables (to add keys marking a relation between two objects) I am really stumped as to how you would be able to retrieve data in a way that would be useful for normal we...
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Meaning of Open hashing and Closed hashing

... some sort of open addressing strategy. This explains why "closed hashing" and "open addressing" are synonyms. Contrast this with open hashing - in this strategy, none of the objects are actually stored in the hash table's array; instead once an object is hashed, it is stored in a list which is sep...
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Is there a way to automatically build the package.json file for Node.js projects

...rogram like npm just look through the files, see the "require" statements, and then use that to put the necessary entries in the package.json file? Are there any programs like that? ...
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Is it possible to use Swift's Enum in Obj-C?

I'm trying to convert some of my Obj-C class to Swift. And some other Obj-C classes still using enum in that converted class. I searched In the Pre-Release Docs and couldn't find it or maybe I missed it. Is there a way to use Swift enum in Obj-C Class? Or a link to the doc of this issue? ...