Instance Vs Class Variables Notes

Question 1

what is an instance variable?

Answer 1

an instance variable, also known as an @attribute are variables that we assign to each instance of our class when we initialize them. it constantly gets reassigned every time you create a new class object.

Question 2

what are class variables?

Answer 2

a @@class_variable will be shared among all instances of a class; changing the variable will effect all instances.

Question 3

what are class constants?

Answer 3

a CLASS_CONSTANT will be shared among all instances of a class, but cannot be changed