June 2014
Intermediate to advanced
536 pages
15h 18m
English
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Chapter 9. Collection and container objects
This chapter covers
- Sequentially ordered collections with arrays
- Keyed collections with hashes
- Inclusion and membership tests with ranges
- Unique, unordered collections with sets
- Named arguments using hash syntax
In programming, you generally deal not only with individual objects but with collections of objects. You search through collections to find an object that matches certain criteria (like a magazine object containing a particular article); you sort collections for further processing or visual presentation; you filter collections to include or exclude particular items; and so forth. All of these operations, and similar ones, depend on objects being accessible in collections.
Ruby represents ...
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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.