Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Buy something else

This book wants to be a recipe book. But in my opinion it doesn't do it's job very well. There are too many simple examples inside (which take a lot of space) and can be found in similar form on-line. Also, the author doesn't do a very well job at explaining things the right way and it seems the examples aren't that well thought through (both the choice of examples and their presentation).The recipes explained in the book are not nearly as good as those in ie. Perl Cookbook, and don't seem to be that usable either. This book looks more like a collection of school assignments with solutions than practical examples needed by a developer. It may be interesting for someone who wants to learn Perl, but then it may also be too hard for beginners to comprehend the code inside the book (the explanations are not that elaborate).The list of recipes might look interesting at first glance, but if you go into depth with this book, you soon notice that it simply isn't worth it.