I recently purchased the 8/01 printing of this book. I did so after a quick scan of the book. My decision was heavily based on the fact that it's publish by O'Reilly, a company I had come to trust for accuracy.
The author is very clear in conveying the given topics, and for that alone the book is worth purchasing. However, the book is riddled with errors in the example code. In some cases the errors are intentional and corrected later. Other's have been reported to O'Reilly, but appear to have gone unchecked. The current errata page for this book is quite long and was last updated (8/15/01 as of this writing) during the same month as the printing I have. However, O'Reilly still has these glaring errors classified as unverified.
Overall the book has been a wonderful learning tool, but you must take the source with a hefty grain of salt, and make your first stop the errata page.
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