November 2016
Intermediate to advanced
480 pages
14h 42m
English
Content preview from Swift Programming: The Big Nerd Ranch Guide
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Naming Things: A Cautionary Tale
There is an edge case with protocol extensions that may prove to be a great source of frustration if you are not careful. In the previous section, you added description to the requirements of Exercise (by making Exercise inherit from the CustomStringConvertible protocol), added a default implementation for description, and added a specific implementation to TreadmillWorkout that took precedence over the default implementation. This worked correctly because description was required by the Exercise protocol. But what happens if you write a protocol extension to add a property or method, then add a property or method with the same name (but a different implementation) to a conforming type?
The answer is ...
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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.