Conclusion
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Here’s what you learned in this lesson:
- Inheritance and polymorphism enable you to create flexible, reusable code.
- You created a
PublicDomainObject
subclass ofMuseumObject
. - It has a property,
primaryImageSmall
, that isn’t in the parent class, so you added it to the primary constructor. - You redefined
showImage()
, then called this method from aMuseumObject
and from aPublicDomainObject
. - Each object behaved according to its type: The
MuseumObject
usedWebViewComposable
, and thePublicDomainObject
usedMuseumObjectComposable
.