November 2013
Beginner
592 pages
17h 49m
English
book
Learning iOS Development: A Hands-on Guide to the Fundamentals of iOS Programming
by Maurice Sharp, Erica Sadun, Rod Strougo
Content preview from Learning iOS Development: A Hands-on Guide to the Fundamentals of iOS Programming
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Copying and Modification
You may have expected to see 99 printed in the console because in the pulsing example, you were able to successfully modify self.taxiWidth.constant. This has to do with how the block’s execution stack is created. Figure 13-1 shows that the stack has a read-only (italicized) copy of each variable. The values are frozen at the time the block is created.
Figure 13-1 Block context variables
Although the block’s copy of self is not modifiable, the value is still the address for the same aboutViewController object. The properties can still be changed, as can any part of those properties.
For the 99 example, aNumber is not a ...
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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.