June 2009
Intermediate to advanced
336 pages
9h 13m
English
Content preview from Ruby Best PracticesBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Appendix A. Writing Backward-Compatible Code
Not everyone has the luxury of using the latest and greatest tools available. Though Ruby 1.9 may be gaining ground among developers, much legacy code still runs on Ruby 1.8. Many folks have a responsibility to keep their code running on Ruby 1.8, whether it is in-house, open source, or a commercial application. This appendix will show you how to maintain backward compatibility with Ruby 1.8.6 without preventing your code from running smoothly on Ruby 1.9.1.
I am assuming here that you are backporting code to Ruby 1.8, but this may also serve as a helpful guide as to how to upgrade your projects to 1.9.1. That task is somewhat more complicated however, so your mileage may vary.
The earlier you start considering backward compatibility in your project, the easier it will be to make things run smoothly. I’ll start by showing you how to keep your compatibility code manageable from the start, and then go on to describe some of the issues you may run into when supporting Ruby 1.8 and 1.9 side by side.
Please note that when I mention 1.8 and 1.9 without further qualifications, I’m talking about Ruby 1.8.6 and its compatible implementations and Ruby 1.9.1 and its compatible implementations, respectively. We have skipped Ruby 1.8.7 and Ruby 1.9.0 because both are transitional bridges between 1.8.6 and 1.9.1 and aren’t truly compatible with either.
Another thing to keep in mind is that this is definitely not intended to be a comprehensive guide to ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.