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Re: NSString property: copy or retain?

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Re: NSString property: copy or retain?

Subject: Re: NSString property: copy or retain?
From: Jean-Daniel Dupas <email@hidden>
Date: Mon, 22 Dec 2008 23:38:48 +0100


Le 22 déc. 08 à 23:04, Debajit Adhikary a écrit :

Let's say I have a class called SomeClass with a string property name:
@interface SomeClass : NSObject{
   NSString* name;
}
@property (nonatomic, retain) NSString* name;
@end
I understand that name may be assigned a NSMutableString in which case this will may to errant behavior.

(1) For strings in general, is it *always* a good idea to use the "copy" attribute instead of "retain"?

Yes

(2) Is a "copied" attribute in any way less efficient than such a
"retain-ed" attribute?

No, as the string will be retain if it is immutable (the copy operation is optimized to return [self retain])


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  >NSString property: copy or retain? (From: "Debajit Adhikary" <email@hidden>)




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