"Lin Jianfong" <[EMAIL PROTECTED]> writes:As far as I know, objective C is sort of ancestor to C++,
Not an ancestor. Objective C and C++ were seperately developed, in different parts of the C community, and so far as I know there was little or no communication or cross-fertilization.
Your description is pretty decent; Objective-C came from a company called Stepstone, IIRC, and as you said, owed a lot to SmallTalk.
(Well, there is a creature called 'Objective-C++', but I don't know much about that, though I get the impression it is little used.)
The primary purpose of Obj-C was to enable code to create interface classes between a C++ framework (say, a library for complex math operations) and Obj-C objects used by NEXTSTEP (Cocoa, GNUstep, etc) app-- such as a GUI app written using ProjectBuilder and InterfaceBuilder.
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