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Re: No sure way to tell whether an array is mutable?

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Re: No sure way to tell whether an array is mutable?

Subject: Re: No sure way to tell whether an array is mutable?
From: Kenny Leung <email@hidden>
Date: Thu, 25 Jan 2007 18:40:46 -0800

Arrrgh! And we used to laugh at the Java guys because of this same problem.

-Kenny


On Jan 25, 2007, at 6:37 PM, Graham Perks wrote:

On Jan 25, 2007, at 8:21 PM, Kenny Leung wrote:
NSCFArray insertObject:atIndex:]: mutating method sent to immutable object
According to http://www.cocoadev.com/index.pl?NSMutableArray,
"This happens because of TollFreeBridging. Both NSArray and NSMutableArray are actually implemented using NSCFArray?, so the isKindOfClass: trick won't work here. As far as I know, there is no reliable, documented way to see whether an array is mutable or not besides trying it and seeing whether it works."
Awesome.
Graham Perks.


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References:  
  >No sure way to tell whether an array is mutable? (From: Kenny Leung <email@hidden>)
  >Re: No sure way to tell whether an array is mutable? (From: Graham Perks <email@hidden>)




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