Re: Sorting array of NSDictionaries sortedArrayUsingFunction

FROM : glenn andreas
DATE : Tue Jun 13 23:47:14 2006

On Jun 13, 2006, at 4:31 PM, David Alter wrote:

> Sorry about that. Here is the details about the selector
>
> 2006-06-13 14:24:57.326 TestApp[2195] *** -[NSCFDictionary 
> sortedArrayUsingFunction:context:]: selector not recognized [self = 
> 0x52f5b0]
> 2006-06-13 14:24:57.327 TestApp[2195] An uncaught exception was raised
> 2006-06-13 14:24:57.327 TestApp[2195] *** -[NSCFDictionary 
> sortedArrayUsingFunction:context:]: selector not recognized [self = 
> 0x52f5b0]
> 2006-06-13 14:24:57.327 TestApp[2195] *** Uncaught exception: 
> <NSInvalidArgumentException> *** -[NSCFDictionary 
> sortedArrayUsingFunction:context:]: selector not recognized [self = 
> 0x52f5b0]
>
>
> I'm guessing that it is looking for the selector in the 
> NSDictionary. But the function that I'm using for the compare is 
> not part of the NSDictionary class. This can be seen in the example 
> I have in my original message.
>
> thanks for the help
> -dave


No, it means that this line:

>>>     NSArray * sortedItems = [unsortedItems 
>>> sortedArrayUsingFunction:orderByName context:nil];



is the problem - unsortedItems is a dictionary - not an array, and 
you can't sort a dictionary.

Glenn Andreas                      <email_removed>
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