Re: KVC broken in 10.4.4 on Intel?
Re: KVC broken in 10.4.4 on Intel?
- Subject: Re: KVC broken in 10.4.4 on Intel?
- From: Joe Jones <email@hidden>
- Date: Sun, 29 Jan 2006 09:30:23 -0800
The problem isn't that Intel is broken, the problem is that you are
passing an NSNumber to a message that is expecting a float. This
works on PPC due to the way that the parameters are put on the
registers that is not available on the register limited intel machine.
I am not sure what actually you can do to keep the message using a
float parameter but changing that message to accept an NSNumber
instead of a float should correct your problem.
Does anyone know how to use KVC with a non-ObjC type like float?
joe
On Jan 28, 2006, at 6:30 PM, Da Woon Jung wrote:
Hi,
On my PowerBook G4 (PPC), the following works fine:
- (void)setFaintestVisible: (float)aValue
{
NSLog(@"%f", aValue);
}
//...elsewhere, inside a method...
[self setValue:[NSNumber numberWithFloat: 7.9f]
forKey:@"faintestVisible"];
// Prints 7.900000
However on an Intel iMac (OS X 10.4.4), it apparently prints 0.00000.
Shouldn't this be allowed according to the KVC spec? I thought scalar
unwrapping was supposed to be something I took for granted:
(http://developer.apple.com/documentation/Cocoa/Conceptual/
KeyValueCoding/Concepts/DataTypes.html#//apple_ref/doc/uid/20002171)
I first experienced this problem on the Intel DTK I had access too,
but I assumed it'd be fixed on production Intel iMacs. I don't own an
Intel iMac (not for sale yet here :( , but my beta testers do, and
they report the above issue.
Cheers,
DW
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