December 2013
Beginner
576 pages
16h 4m
English
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The description Method
You can also use the %@ format characters to display the entire contents of arrays, dictionaries, and sets. In fact, you can use them to display objects from your own classes, as well, as long as you override the description method inherited by your class. If you do not override the method, NSLog simply displays the name of the class the object belongs to and the address of the object in memory. That is the default implementation for the description method inherited from the NSObject class.
Following is an example of a description method that you could add to your Fraction class’s implementation section to have it format a Fraction object. This uses NSString’s stringWithFormat: method; a method that resembles NSLog but, ...
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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.