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Not to much a dream, more a nightmare
on 9 July 2013
One of the other reviewers refers to this book as a "beginner dream book". It isn't, unless "dream" can be taken to include "nightmare".
I am far from an expert in regex - only just past the tyro level. Yet there were several places where the book rather worried me, because it meant that the little I thought I knew must have been wrong. Fortunately for my self-esteem, trying the problem examples out in a test harness demonstrated that it was nearly always the book that was wrong, rather than me.
I'm sure that Ben Forta knows vastly more about regular expressions than I do, but I can only conclude that either he or his editors skimped on proof-reading, as the book is packed with typographical errors. And in a book about regular expressions, that is unforgivable - regex is about absolute precision, and can stand or fall on a missplaced space.