April 2020
Intermediate to advanced
528 pages
15h 40m
English
Content preview from iOS Programming: The Big Nerd Ranch Guide, 7th Edition
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Passing Data Around
When a row in the table view is tapped, you need a way of telling the DetailViewController which item was selected. Whenever a segue is triggered, the prepare(for:sender:) method is called on the view controller initiating the segue. This method has two arguments: the UIStoryboardSegue, which gives you information about which segue is happening, and the sender, which is the object that triggered the segue (a UITableViewCell or a UIButton, for example).
The UIStoryboardSegue gives you three pieces of information: the source view controller (where the segue originates), the destination view controller (where the segue ends), and the identifier of the segue. The identifier lets you differentiate segues. Let’s give ...
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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.