Re: Need NSNumber setBoolValue for KVC Compliance workaround

FROM : Ken Thomases
DATE : Tue May 27 22:55:48 2008

On May 27, 2008, at 3:41 PM, David Carlisle wrote:
> I want to put an NSMutableDictionary into my standardUserDefaults 
> with keys and boolean values [NSNumber numberWithBool:YES/NO], then 
> bind that to a table with keys and checkboxes in my preferences 
> window.  That all seems to work nicely, except that when I check 
> one of the checkboxes I find that NSNumber needs a setBoolValue 
> method to be KVC compliant.
>
> So I need an object that is both property list compliant and KVC 
> compliant for a BOOL value.
>
> Is there a standard workaround somewhere?


Are you binding to "foo.bar.boolValue"?  You should just bind to 
foo.bar.

Since an NSNumber is immutable, any request for a setBoolValue: 
method raises a red flag -- why is something trying to modify an 
NSNumber.  That thing, whatever it is, should be trying to replace 
that NSNumber.

Cheers,
Ken