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Re: style question: when to use 'id' as return value?
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Re: style question: when to use 'id' as return value?


  • Subject: Re: style question: when to use 'id' as return value?
  • From: Bill Bumgarner <email@hidden>
  • Date: Mon, 17 Dec 2007 14:25:51 -0800

On Dec 17, 2007, at 2:14 PM, Sean McBride wrote:
NSString has the method:

+ (id)stringWithString:(NSString *)aString

Why is the return value not an 'NSString*' instead of an 'id'? Is this
just a stylistic preference, or...?

Because both NSString and NSMutableString Do The Right Thing when that method is invoked and, thus, declaring that the method returns a particular type of string -- mutable or immutable -- would be wrong half the time.


b.bum

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  • Follow-Ups:
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References: 
 >style question: when to use 'id' as return value? (From: "Sean McBride" <email@hidden>)

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