[Solved] What is the primary purpose of using extend inside a Ruby class? — Ans: To add module methods as class methods to the class | Ruby

Ruby - Modules and Mixins

What is the primary purpose of using extend inside a Ruby class?

ATo add module methods as class methods to the class

BTo include instance methods from a module into the class

CTo inherit from another class

DTo create a new instance of the class

Step-by-Step Solution

Solution:

Step 1: Understand extend usage
extend adds module methods as class methods, not instance methods.
Step 2: Compare with include
include adds module methods as instance methods, not class methods.
Final Answer:
To add module methods as class methods to the class -> Option A
Quick Check:
extend = class methods [OK]

Quick Trick: Use extend to add module methods as class methods [OK]

Common Mistakes:

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What is the primary purpose of using extend inside a Ruby class?