Tom Christiansen Books

Programming Perl

By Larry Wall, Jon Orwant, Tom Christiansen

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Perl Cookbook

By Tom Christiansen

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Programming Perl

By Larry Wall, Jon Orwant, Tom Christiansen

Average: 0.00, 0 Ratings

Perl cookbook

By Tom Christiansen

Average: 0.00, 0 Ratings

The Perl Cookbook is a comprehensive collection of problems, solutions, and practical examples for anyone programming in Perl. Topics range from beginner questions to techniques that even the most...

Learning Perl

By Randal L. Schwartz

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Learning Perl on Win32 Systems

By Randal L. Schwartz

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Perl cookbook

By Tom Christiansen

Average: 0.00, 0 Ratings

The Perl Cookbook is a comprehensive collection of problems, solutions, and practical examples for anyone programming in Perl. Topics range from beginner questions to techniques that even the most...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.