There are too many times that the author assumes an understanding which won't come at least till the end of the chapter. His language is too concise and misconceptions often not anticipated. Furthermore, in some cases we are left with ambiguity. More examples and exercises would have helped. To make matters worse the author does not provide answers to the exercises and even online there is no reliable source of explanation. An example of a superior text for language instruction is K.N.King's C Programming, A Modern Approach.
On the other hand, There is a useful progression of topics and the mood is serious and not wasted on jokes (a la Dummies). Given the length of the book and with some much material to potentially cover I think this is still a good introduction to objective-c. I don't have a lot to compare it to.
I learned C before tackling this book and I think that was an advantage.Get more detail about Programming in Objective-C 2.0 (2nd Edition).
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