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Thanks. &nbsp;Is it only admins that can choose four categories?
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Thanks.  Is it only admins that can choose four categories?

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Does Cocoa (Mac desktop) programming use an MVC just like iPhone programming?<br />
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Microsoft .NET apps have many design patterns and there is no one way to create them, as there is with Cocoa and Cocoa Touch (iPhone) apps. &nbsp; Is that strictly true or do Mac/iPhone apps follow other patterns?
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Does Cocoa (Mac desktop) programming use an MVC just like iPhone programming?

Microsoft .NET apps have many design patterns and there is no one way to create them, as there is with Cocoa and Cocoa Touch (iPhone) apps.   Is that strictly true or do Mac/iPhone apps follow other patterns?

Does Cocoa use MVC?

Kernel and system programming is the process of creating the software necessary for a computer or device to function and operate other programs. Some operating systems (such as Microsoft Windows) are proprietary, but others, such as the various Linux distributions, are open source.

System Programming

All of Apple's hardware is produced solely by Apple Inc., who determines internal systems, designs, and prices. Apple buys certain components wholesale from third-party manufacturers. The current Mac product family uses Intel x86-64 processors. All Mac models ship with at least 1 GB RAM as standard. Current Mac computers use ATI Radeon or nVidia GeForce graphics cards and include a dual-function DVD and CD burner, called the SuperDrive. Current Apple hardware includes the iPad, iPhone, iMac, Mac Pro, Macbook, iPod and Apple TV. Discontinued hardware includes the Apple I, Apple II, and the Apple III, the Lisa, the Newton, the Quadra, Performa, Centris, Macintosh II and LC series, the Power Macintosh, iBooks and the MacBook.

Apple Hardware

Swift is a compiled programming language created for iOS, OS X, watchOS, tvOS and Linux development by Apple Inc. Swift is designed to work with Apple's Cocoa and Cocoa Touch frameworks and the large body of existing Objective-C code written for Apple products. Swift is intended to be more resilient to erroneous code ("safer") than Objective-C and also more concise. It is built with the LLVM compiler framework included in Xcode 6 and later and uses the Objective-C runtime, which allows C, Objective-C, C++ and Swift code to run within a single program. A second free implementation of Swift targets Microsoft's Common Language Infrastructure (a.k.a. .NET) and the Java/Android platform.