When specifying constraints for type parameters in a generic class, you can specify constraints for more than one parameter.
To specify more than one constraint, just place each constraint on a separate line, with its own where clause.
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// TFavThing type parameter must be a type that implements IBuryable
// TFavFood type parameter must be a type that implements IEdible
public class Dog<TFavThing,TFavFood>
where TFavThing: IBuryable
where TFavFood: IEdible
{
public void BuryThing(TFavThing thing)
{
thing.Bury();
}
public void Eat(TFavFood eatThis)
{
eatThis.Eat();
}
}
When constructing this type, we just need to use types that implement the specified interfaces.
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// Bone implements IBuryable
// RawFood implements IEdible
Dog<Bone,RawFood> d = new Dog<Bone,RawFood>("Buster", 5);
d.BuryThing(new Bone("Rawhide"));
d.Eat(new RawFood(16)); // 16 oz chunk
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| // TFavThing type parameter must be a type that implements IBuryable// TFavFood type parameter must be a type that implements IEdiblepublic class Dog<TFavThing,TFavFood> where TFavThing: IBuryable where TFavFood: IEdible{ public void BuryThing(TFavThing thing) { thing.Bury(); } public void Eat(TFavFood eatThis) { eatThis.Eat(); }} |
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| // Bone implements IBuryable// RawFood implements IEdibleDog<Bone,RawFood> d = new Dog<Bone,RawFood>("Buster", 5);d.BuryThing(new Bone("Rawhide"));d.Eat(new RawFood(16)); // 16 oz chunk |