Re: objective-c question

[Marcus G. Daniels]

TP> The classes which use a demand curve would get a pointer to a
TP> DemandCurve subclass, but use it as a DemandCurve because they only
TP> need the getQuantity function. How is this done in Objective-C? I only
TP> have experience with C++

Here's how you specify the subclasses interfaces, if that's what you mean...

#import <objectbase/SwarmObject.h>

@interface DemandCurve: SwarmObject
@end

@interface LinearDemandCurve: DemandCurve
{
  double scaling;
}
- setScaling: (double)scaling;
- (double)getQuantity: (double)price;
@end

@interface PolynomialDemandCurve: DemandCurve
{
  double *terms;
}
- setScalingVector: (double *)scalingVector;
- (double)getQuantity: (double)price;
@end


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