Chapter 24. Portable Cocoa
Although Cocoa is typically thought of as a proprietary Apple API, this is only partly true. The core is an implementation of the OpenStep specification. This core is enough to build some very rich applications, and is portable to a number of different systems.
24.1 NeXT and Sun
OpenStep was created in 1993 as a result of a collaboration between Sun and NeXT. The two companies each released an implementation of the specification for their own operating systems. For a while there were two competing OpenStep operating systems for Sun’s SPARC workstations, Solaris with Sun’s OpenStep layer, and NeXT’s OPENSTEP/Mach for SPARC.
The Sun implementation used the X Display PostScript (XDPS) extension, which allowed OpenStep ...
Get Cocoa® Programming Developer’s Handbook, Second Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
