Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This really is the book

This is one of the best programming books I have ever worked with/used. I had a program which I had written in Perl to parse and search unformatted log files. It worked, but very slowly. I picked up this book and thought I would try and rewrite it in C during the holidays. Four days latter it was done. I felt like I had really accomplished something, rewritten my program (which is now over a 100 times faster), and learned some C.The best thing was that I never ran into an example that didn't work and the examples were so straight forward I didn't have to write and try every one. ( I'm of the ilk that usually writes and tries all the examples). I wish they could all be this good.