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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File References and Bookmarks
One problem with paths and regular file URLs is that they are fragile in the face of changes to the file system. You can create a path or URL that points to a file, and the user could move that file in the Finder behind your back. If you then try to get metadata or open the file, you could fail because the file is no longer living where you think it is living.
File references
A special kind of URL, called a file reference URL, tracks a file by its ID. This means the reference is still good even if the name or location of the file changes in the file system. Usually this is hidden behind classes like NSDocument, but it can be useful in other contexts aside from document files.
Get a file reference URL from a regular ...
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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.