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Re: Equivalent of isKindOfClass for Foundation Types?
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Re: Equivalent of isKindOfClass for Foundation Types?


  • Subject: Re: Equivalent of isKindOfClass for Foundation Types?
  • From: Scott Anguish <email@hidden>
  • Date: Thu, 4 May 2006 17:31:01 -0400

I think you'll only ever get objects here..

KVC will wrap the double for you automatically

http://developer.apple.com/documentation/Cocoa/Conceptual/ KeyValueCoding/Concepts/DataTypes.html#//apple_ref/doc/uid/20002171



On May 4, 2006, at 11:44 AM, Christopher Hickman wrote:

I need to test if the value passed to my NSValueTransformer is an
NSTimeInterval. Since NSTimeInterval is just a typedef from double and not
a class, I can't use the NSObject methods to test its type.


The best I can think of now is to test it with typeof() against
NSTimeInterval, but I think I should really allow any numeric type for this
transformer.


Currently my code says this:

- (id)transformedValue:(id)value;
{
	if (typeof(value) != typeof(NSTimeInterval)) { //bail if not
NSTimeInterval
		return nil;
	end if

	NSMutableString *result = [NSMutableString string];	

	//do my stuff
	return result;
}

What is the best way to test this value to see if it is numeric, so my
transformer could be a little more flexible?

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References: 
 >Equivalent of isKindOfClass for Foundation Types? (From: "Christopher Hickman" <email@hidden>)

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