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If you are a beginner and you survived using this book, consider it as an accomplishment. This book is quite difficult to understand, it takes a lot of testing. Even a short example cannot quite explained by the author properly. The way the author explains something he thinks that all the audience are like John Ousterhout.
This book gave me a headache browsing back and forth looking for some answers. However, I will give Don Libes a 2* because of the effort. Too bad there is really no alternative out there. Once I learned Expect from trial and errors and more headaches I can probably write a better one.
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