[Solved] How can you access a constant defined in a parent class from a subclass in Ruby? — Ans: Use the scope resolution operator with the parent class name | Ruby

Ruby - Class Methods and Variables

How can you access a constant defined in a parent class from a subclass in Ruby?

AConstants are not inherited; you must redefine them

BUse 'super' keyword to access constants

CUse instance variable syntax @CONSTANT

DUse the scope resolution operator with the parent class name

Step-by-Step Solution

Solution:

Step 1: Understand constant inheritance in Ruby
Constants are inherited by subclasses but can be accessed explicitly using parent class name.
Step 2: Access constant using scope resolution operator
Use ParentClass::CONSTANT to access parent's constant inside subclass.
Final Answer:
Use the scope resolution operator with the parent class name -> Option D
Quick Check:
Parent constant access = ParentClass::CONSTANT [OK]

Quick Trick: Use ParentClass::CONSTANT to access parent's constant [OK]

Common Mistakes:

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How can you access a constant defined in a parent class from a subclass in Ruby?