Title: Valgfritt

Text: After you deploy a new class, you might discover a better implementation. If other parts of the program are using your class, it might be time-consuming and error-prone to change the interface. But if you designed the interface carefully, you can change the implementation without changing the interface, which means that other parts of the program don't have to change. Hver avsnitt vil være en test.

Save test: Bruk dette hvis du vil dele denne skrivetesten (kun for godkjente brukere).