Unicode Explained [Brossura]

' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '

¶ I had another Unicode book on my desk for a long time. Hardbound, thick, impressive. Never found a way to derive useful information from it however. This book is different.

¶ I had high expectations for this book because the author, Jukka Korpela, is one of those erudite and patient people who work hard to raise the signal to noise ratio in Internet newsgroups and other forums. I certainly have quite a few posts from "Yucca" in my working archive of Web tips.

¶ Working with Web pages and applications, one can run into practical problems with text display. For Americans especially, often using default software configurations, some of the problems of displaying content in other languages can seem intractable. They are not of course -- but a bit of help from workers in the rest of the world can be a real lift. After all, they deal with these issues in a practical way more often.

¶ I had a nasty run-in (also known as "learning experience") with browser display issues when my "CSS Cheatsheet" rose in popularity in Google and other search engines. I decided to create a page quoting comments from linking sites in their native languages. Everything was fine until I got to Russian. I felt as if I were up against a conspiracy of browsers, tools, operating systems and even particular custom configurations!

¶ If you are like me and your focus is practical, I recommend:

The first two chapters in Part 1: Characters as Data; Writing Characters

All the advanced topics in Part 3: these 5 chapters covered character issues involved with programming and developing in the Internet environment.

¶ Overall, this book is well-organized and quite readable, with lots of relevant illustrations. Important material is repeated and summarized for greater clarity. The author also used lots of examples from Windows programs that are familiar to many of us. This is a real plus.

If you're like me, you probably think of Unicode as "expanded ASCII" and that's about it. But there is infinitely more to the subject than I thought, and Unicode Explained by Jukka K. Korpela is an exhaustive reference to all that is Unicode. And in this increasingly global computing environment, you will need to know this information...

Contents:

Part 1 - Working with Characters: Characters as Data; Writing Characters; Character Sets and Encoding

Part 2 - A Systematic Look at Unicode: The Structure of Unicode; Properties of Characters; Unicode Encodings

Part 3 - Advanced Unicode Topics: Characters and Languages; Character Usage; The Character Level and Above; Characters in Internet Protocols; Characters in Programming

Appendix - Tables for Writing Characters; Index

In concept, Unicode is real simple. An expanded character set using 16 bit encoding, and you can accommodate far more languages and symbols than straight ASCII. But the implementation is far more complex than that. Korpela starts with the basics of characters... what they are, what they mean, and the nuances involved. From there, you learn about how applications have to interpret the different encoding standards and handle things like case, sort orders, line breaks, etc. When I saw the size of the book (600+ pages), I wondered if the material was just a lot of reference tables that could be found online. Gladly, it's not... This is an exploration of everything that is Unicode, and you'd have to wade through a lot of web pages to even begin to glean the level and value of information that you'll find here.

If you have anything to do with programming or designing global software, this book purchase is a no-brainer. And even if you're not doing anything in that area right now, this is one of those reference titles that is worth having on your bookshelf and available for the first time you *do* need it. It won't take long to pay for itself...

This book is excellent. The author's writing style is easy to read and he pretty much explains everything about Unicode. It's perfect if you're working with multi-lingual Web sites or email, or just if you want to start using Unicode for all of your Web site development (something everyone should do).

The only thing disappointing about this book is that all of his examples and screen shots are for and from Windows. A reader could come away with the feeling that Mac OS X and Linux don't have as much support for Unicode as Windows which, of course, is not the case at all. The least he could have done is to mention and give screenshots of Linux's "Character Map" app and Mac OS X's built-in "Character Palette", both of which are pretty much just like the Windows "Character Map" app.

I'm surprised O'Reilly allowed a book about such a platform-neutral subject to be so Windows-centric. Hopefully they can hire someone to add Linux and Mac OS X examples into the second edition.