Article:  |
Strings in Cocoa: Part I | |
| Subject: | Comparing @"..." type NSStrings | |
| Date: | 2001-07-06 17:02:13 | |
| From: | mikebeam | |
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Response to: Comparing @"..." type NSStrings
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Is that right? Wow, i didn't realize that. Thanks for pointing that out. I guess it makes perfect sense. By the way, what are some of the features of Cocoa that rely on this fact as you mentioned?
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Showing messages 1 through 2 of 2.
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Comparing @"..." type NSStrings
2001-07-07 01:18:41 halliday [View]
Additionally, unless I'm misremembering, SELectors are implemented as unique @"..." type NSString constants as well.
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Comparing @"..." type NSStrings
2001-07-07 00:47:41 halliday [View]
As the NSString documentation indicates (in it's Objective-C version): "The compiler makes such object constants unique on a per-module basis".
Some of the features that rely upon this behavior are Pasteboard Types (they are really @"..." type NSStrings), various Attribute Keys, Exceptions, and Notifications (to name a few). Of course, this is an implementation detail, and is always subject to change.
