[Gnu3dkit-dev] g3dbezier isEqualToBezier:

[Brent Gulanowski]

I am confused about this. If I am misunderstanding or ignorant of 
OpenStep feature, please explain.

G3DBezier's -isEqualToBezier: method uses NSMutableArray's 
-isEqualToArray: method, which in turn uses the contained object's 
class override of isEqual:. In this case, the contained class is 
G3DVector3f, subclass of G3DTuple3f. However, G3DVector3f does not 
override -isEqual:, instead it uses G3DTuple3f's -isEqualToTuple3f:.

My question is, how does NSMutableArray know to use the correct 
isEqual? Is this taken care of in the runtime somehow?

--
Brent Gulanowski