This book is a case in point for accurate titles. The book is exactly what it says it is, a wide overview of all of the different ways for 'Programming Mac OS X'. It starts with a brief history of the operating system, then talks about the operating system basics. It then covers at a high level building applications with Java, Objective-C, Carbon, Applescript and Perl. This includes sections on the tools to use to develop in these languages, and in some basic introductions to get you started on that platform.
In Manning style the graphics are effective, and the code samples are not overused and are well commented. Chapters three and four, which cover Project Builder and the standard compilers, stand out as the heart of the book. Chapter seven, on Applescript, is particularly appreciated because of the lack of documentation or books on this subject.
The book fills a unique roll. It covers all of the different programming possibilities at a level that gives you perspective of the entire playing field. If you want to drill down into say, Java programming, you will need to buy another book. But if you are unfamiliar with OS X and you are looking to program for it, you should take a look at this book to get a feel for the possibilities.