Onyx Neon typesets books with free software, especially Ubuntu GNU/Linux, Perl , PseudoPod, and LATEX. Many thanks to the contributors who make these and. Modern Perl is one way to describe the way the world's most effective Perl programmers work. The Modern::Perl module from the CPAN (The CPAN, pp. Modern Perl, the book, explains Perl programming from novice to expert. Free ePub, Kindle, and PDF downloads.
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We encourage you to share this unmodified PDF with others, .. Modern Perl is a loose description of how experienced and effective Perl 5 programmers work. A Perl blog which explores how Modern Perl helps how great programmers solve their problems quickly and effectively. I've just uploaded Modern Perl: The Almost-Ready-for-the-Printer PDF for your perusal. We have yet to do line and page breaking, and we'll.
So I can totally download taste being more important than technical foundation, in the same way good graphic design is done. These expressions with the conditionals on the end are supposed to reflect English phrasing.
English isn't strict about the order of parts of speech; you can mix them around to change the emphasis. These expressions are the same; they're not meant to strictly indicate order of execution, they're meant to express programmer intent, the way one programmer might explain the logic to another programmer. But nobody's ever explained why that would be a good thing to do.
We say things like 'you can read it out loud and it sounds like English', without ever arguing why this is a good thing. Do most programmers even have English as a first language? I'm not sure aspiring to be like natural languages actually has any merit. I think we should aspire to precision and clarity. Natural languages rarely have those qualities. We can achieve perfect precision and clarity by naming all of our variables x1, x2, x3, x4, etc.
But it's better to give descriptive variable names because it helps us and anyone else reading the code understand what it does. This sort of expression is similar.
What does that mean? Basing programming languages on mathematical notation or something else would also of course be 'meant to express programmer intent'. Why are natural languages a better foundation for programming languages than, for example, maths notation or calculi? Everyone in the Perl community seems to think they just intuitively know it is, but can't explain why.
DougWebb on Dec 10, When you're speaking to another programmer, explaining what a bit of your code is trying to do, do you speak in mathematical notation?
I doubt it. I don't think even mathematicians do that. If you want a well-expressed explaination for why Perl's approach is a good idea, you should read what Larry Wall has written about it.
All I can really say is that it worked really well for me and my team for many years. We rarely misunderstood each other's intent, even though our code reviews were mostly just reading commit diffs.
The Book , and it's gone into production, which means that Onyx Neon is preparing a print-ready PDF to give to the printers. The book should be available in print by the end of October, if not sooner. I've just uploaded Modern Perl: We have yet to do line and page breaking, and we'll probably fix a few typos and conversion artifacts, but I figured that so many people have contributed oh, and I need to add a CREDITS page for everyone who's helped!
Please do not redistribute this PDF, as it'll keep changing as we find and fix more little problems. Feel free to pass on a link to this page. We'll make a very nice PDF after the book goes to print, and we'll have an epub version as well. I'll put those under a friendly license once the publisher gets a few things set up. Feel free to contact me directly with comments, questions, or concerns.
As usual, the best place to report a problem with the content of the book is the Modern Perl book Github repository , but you can also email me directly chromatic cpan.
Thanks for all your work on the Modern Perl book. I've gone over an early draft on github, fixed some problems in the text and I hope you've merged my changes - I can check that using git , and thought that while it didn't teach me a lot new, it was an accurate and useful book for beginners and can heartily recommend it to people who wish to learn Perl 5.
I'd like to feature the book on the Perl beginners' site once it is published and licensed more liberally. It would be a useful addition to the "Perl for Perl Newbies" series and "Impatient Perl" book that are featured there, as well as Simon Cozens' old "Beginning Perl" book. If there's anything I can do to speed up the process, let me know and I may find some spare time for that.
All things considered, I still have a day job doing Perl -: The best Perl Programmers read Modern Perl: