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    Chapter 24. Portable Cocoa > Mobile OS X on the iPhone

    24.2. Mobile OS X on the iPhone

    The iPhone and iPod Touch both run a cut-down port of OS X to the ARM architecture. This does not include all of the libraries found on desktop OS X and does include a few not found on the desktop version.

    The only supported development language for this platform is Objective-C. Unlike the desktop version, the iPhone does not allow the use of garbage collection. This was considered too big of an overhead for the small device.


      

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