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Check a copy

Type the code printed under the tape on any cover, PDF or printout.

Edition code

What the answer means

Current: You have the latest edition.
Out of date: Newer editions exist. You'll see how many, what changed since and a link to the current one.
Not found: No Rolling Edition book has this code. Check the code: 8 letters and digits, such as 483B-Z9SS. O reads as 0, and I or L as 1.

A matching code says which edition a copy claims to be. Anyone can copy a code, so a match isn't proof that a file is ours.

Rolling Edition

Always current. Every example runs.

Free to read and to reuse. Text is CC BY 4.0 and code is MIT. Credit Rolling Edition, link back to the book and to the licence, and say what you changed. How to credit us

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Artificial intelligence Machine learning Search and recommendation Data science

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