Re: Checking the super class of a class

[Richard Frith-Macdonald]

On 2005-10-06 15:49:15 +0000 Andreas Höschler <ahoesch@smartsoft.de> wrote:

> Hi all,
> 
> I need something like [something isKindOfClass:...] with something being not 
> an instance but a class created with NSClassFromString(). A probably working 
> but very ugly hack would be to create an instance of this class with 
> [[something alloc] init] and releasing the object after the check. But I am 
> sure there is a better approach. Any idea?

BOOL isDerivedFrom(Class this, Class base)
{
  if (this == base) return YES;
  this = [this super];
  if (this == 0) return NO;
  return isDerivedFrom(this, base);
}