Start Programming Now: No CS Degree Needed by Alex Tamoykin

Author:Alex Tamoykin
Language: eng
Format: mobi, epub
Publisher: Alex Tamoykin
Published: 2015-02-13T22:00:00+00:00

Use < sign after the name of the child class followed by the parent class name. The class on the left side of < sign is called a child class. The class on the right side is called a parent class or a base class. Let’s instantiate a Child class. Maybe it can play sports too. Let’s try it in IRB (Listing 3.21).

Listing 3.21: Calling the play_sports method on the Child instance

>> child_class = Child.new

>> child_class.play_sports

Ready, set, go!

Yes, it can. Because it inherited play_sports method from it’s parent.

Inheritance is very powerful. As soon as you inherit your child class from a base class, the parent class becomes a part of the child class. It is very useful if you want to reuse parent’s class methods in your child class.

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