Making a Fancy Microwave Oven

Inheritance means that the methods of the child class are exact copies of those in the parent class.

This exercise is part of the course

Object-Oriented Programming with S3 and R6 in R

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Exercise instructions

A microwave oven and and fancy microwave oven have been predefined in your workspace.

Instantiate a regular microwave oven and a fancy microwave oven, assigning the values to a_microwave_oven and a_fancy_microwave respectively.
Get the power_rating_watts value for each type of microwave, assigning the values to microwave_power_rating and fancy_microwave_power_rating respectively.
Use identical() (docs) to verify that the two power ratings are the same.
Call the cook() method of each type of microwave for one second and observe that you get the same behavior in each case.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Explore microwave oven classes
microwave_oven_factory
fancy_microwave_oven_factory

# Instantiate both types of microwave
a_microwave_oven <- ___
a_fancy_microwave <- ___

# Get power rating for each microwave
microwave_power_rating <- ___
fancy_microwave_power_rating <-___

# Verify that these are the same
identical(___, ___)

# Cook with each microwave
___
___

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