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Re: NSMutableArray Problem
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Re: NSMutableArray Problem


  • Subject: Re: NSMutableArray Problem
  • From: Hank Heijink <email@hidden>
  • Date: Thu, 21 Feb 2008 13:53:47 -0500

componentsSeparatedByString returns an NSArray, not an NSMutableArray. You'll need to make a mutableCopy, like so:

NSMutableArray *listItems = [[[list componentsSeparatedByString:@","] mutableCopy] autorelease];

If you don't autorelease your mutable array here, you'll have to release it yourself later.

Hank

On Feb 21, 2008, at 1:48 PM, Philip Bridson wrote:

Hi Guys,

I'm trying to do this:

NSString *list = @"wrenches, hammers, saws";

NSArray *listItems = [list componentsSeparatedByString:@", "];

Which is straight out of the documentation and I want to use a Mutable Array instead, but I get this warning:

warning: initialization from distinct Objective-C type

then I want to add an object like so:

	[listItems addObject:newObject];

	But when I run the program it halts and says the following:

	 -[NSCFArray addObject:]: mutating method sent to immutable object

	Does anyone know what is going on?

	Phil
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References: 
 >NSMutableArray Problem (From: Philip Bridson <email@hidden>)

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