On Jun 10, 2010, at 5:18 PM, Tom Korsgren wrote:

> I'm trying to add some attributes to a NSMutableAttributedString using the 
> code below but only get errors.
> 
>       NSMutableAttributedString *string = @"aaaaaaaaaaaaaaaaaaaaaaa";

This line is wrong.  You are taking a NSString literal object pointer and 
assigning it to a pointer to an NSMutableAttributedString.  The compiler should 
be giving you a warning.

First, NSString is not mutable.  Second, it's not an attributed string.


> In the log the following is printed:
>       aaaaaaaaaaaaaaaaaaaaaaa 1 2
>       *** -[NSCFString addAttribute:value:range:]: unrecognized selector sent 
> to instance 0x30b0
>       *** -[NSCFString addAttribute:value:range:]: unrecognized selector sent 
> to instance 0x30b0

NSCFString is a concrete implementation class within the NSString class 
cluster.  Its appearance in the above messages is part of the clue as to the 
problem.  It's not any variety, let alone a mutable variety, of attributed 
string.

Regards,
Ken

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