If you look closely at the errata list, you will see that almost all the "errors" are actually completely trivial matters, like "at the end of the line,
))}); should be
)) });", or a missing comma in the text.
All technical books contain a large number of this sort of error. You would probably never notice most of them unless they were pointed out. One of the drawbacks of having a public errata page is that it points out all the errors, and that makes people aware of them; then people wonder if perhaps the book has an unusually large number of errors compareed to other books. But no; other books have the same number of errors. You just aren't aware of them, because they don't have public errata pages. If I weren't so compulsive about listing absolutely every trivial little spacing error on the web pages, you would probably not have heard that HOP had a lot of errors.
Both printings are extremely good quality, and the differences between the first and second printings are trivial.
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