August 2011
Intermediate to advanced
552 pages
23h 48m
English
Content preview from Advanced Mac OS X Programming: The Big Nerd Ranch GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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64-Bit Computing
Mac OS X 10.4 introduced 64-bit computing to the Mac platform. 64-bit computing means that a process can directly address more than the 4 gig address space that 32-bit computing allows. The process might not actually get more than 4 gigs of memory to play with, but it will have the extra address space. That depends on what the user has installed in the machine, per-process limits, different operating system settings, and so on.
How much bigger is the 64-bit address space compared to the 32-bit one? A common analogy is this: if a byte is a dot the size of the period at the end of this sentence, then a 32-bit address space would cover the surface of the Golden Gate Bridge. A 64-bit address space would cover the entire land surface ...
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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.
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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.