Used it as a template to implement an Objective-C pre-processor + runtime + basic classes on my Amiga (had just gotten a C compiler for it). I am somewhat surprised by seeing the 1986 release date, I guess I must have gotten it pretty soon after it was published. It also clearly describes the deliberate hybrid style that seems to be mostly forgotten now: object largely implemented in C, but connected via dynamic messaging. Still one of the best books on OO out there, because it treats OO as an architectural style with tradeoffs relative to other styles, rather than as a religion to be accepted (or nowadays as the devil to be cast into hell). Once the pre-processor was there it was used to create actual syntax.ĭocumented in "Object Oriented Programming: An Evolutionary Approach". Objective-C started out as a set of C Macros, then an actual pre-processor was created, mostly to deal with uniquing selectors. Objective-C was a modification of the GCC developed by NeXT.
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