March 2016
Beginner
414 pages
9h 29m
English
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Traits
So far, you have learned that extending from classes allows you to inherit code (properties and method implementations), but it has the limitation of extending only from one class each time. On the other hand, you can use interfaces to implement multiple behaviors from the same class, but you cannot inherit code in this way. To fill this gap, that is, to be able to inherit code from multiple places, you have traits.
Traits are mechanisms that allow you to reuse code, "inheriting", or rather copy-pasting code, from multiple sources at the same time. Traits, as abstract classes or interfaces, cannot be instantiated; they are just containers of functionality that can be used from other classes.
If you remember, we have some code in the Person ...
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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.