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Re: Convience Methods and Collections
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Re: Convience Methods and Collections


  • Subject: Re: Convience Methods and Collections
  • From: Wain Glaister <email@hidden>
  • Date: Fri, 30 Mar 2007 16:23:01 +0100

Hi,

What is rootNode?
Or, more importantly, does it retain the object you pass it in setObject?


The point:
[NSArray arrayWithObjects:...] autoreleases the array it creates so if you don't retain it and neither does rootNode, well, its gonna disappear...


Wain


On 30 Mar 2007, at 16:14, Ryan Marsh wrote:

Hello All,

I apologize in advance for such a newbie question.
Why do objects created with convenience methods get auto-released when I add them to a collection?


This simple example from the init of an NSOutlineView datasource:

[rootNode setObject:[NSArray arrayWithObjects:devices,folders,playlists,nil] forKey:@"children"];

 The array will be released before the first time I call

[rootNode objectForKey:@"children"]

If I use [[NSArray alloc] initWithObjects:devices,folders,playlists,nil] then it works fine.

Thanks,
-ryan
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References: 
 >Convience Methods and Collections (From: Ryan Marsh <email@hidden>)

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