Le 7 juin 08 à 22:26, WT a écrit :
I still don't see any good-enough *technical* reason to justify basing Cocoa on an extension of C, however. That's all I've been trying to say.
WT, I think this is an interesting question (as are your other comments), and I think I have the answer :-) The thing is that Mac OS X is a UNIX system and C is the native language on UNIX (in part because UNIX is itself implemented in C). Therefore, C based languages (i.e., C, ObjC and C++) have a very synergistic relationship with the OS, at the technical level. There have been several serious initiatives to provide new environments based on other languages (from ADA back in the early eighties to Java more recently) , but so far none has been able to displace C-based languages for application development on UNIX based systems, except in the field of in-house enterprise applications or in very specific niches. For instance, look at the "SUN Java Desktop System", which constitutes user-facing layers of Solaris 10, including a complete application suite. Despite its name, it is nearly entirely developed in C/C++. For better or worse, it seems that, as a general rule, the language in which a given OS is implemented is also the most technically apt for application development on that OS. This might not hold true forever, of course. But, in the meantime, I think we are certainly very lucky to be stuck with Objective-C, which is a surprisingly efficient and powerful combination of C and Smalltalk. You'll see that with the new automatic garbage collection in Objective-C 2.0, the main development productivity weakness with regard to languages like Java has been lifted.
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