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[iOS프로그래밍] Cocoa Architecture

[edit] Cocoa historyCocoa is derived from the NeXTSTEP and OPENSTEP programming environments developed by NeXT in the late 1980s. Apple acquired NeXT in December 1996, and subsequently went to work on the Rhapsody operating system that was supposed to be the direct successor of OPENSTEP. It was to have an emulation base for Mac OS applications, called Blue Box. The OPENSTEP base of libraries and..