Published Apr 23, 2021Updated Mar 7, 2023
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A class is a piece of code within a program that functions as a template or blueprint for creating multiple instances of a particular object.

The template provides initial values and behavior for each of these instances. Each instance is an object itself.


Suppose we want to create a Cat class with three instance variables:

  • @cat_name
  • @cat_color
  • @cat_age
class Cat
def initialize(name, color, age)
@cat_name = name
@cat_color = color
@cat_age = age

Now we can create a bunch of objects based off of the Cat class:

mochi ="Mochi", "Gray", 2)
bean ="Bean", "Black/Gray", 6)
femi ="Femme en Noir", "Black/White", 9)

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