[Solved] What is the purpose of defining methods with self. inside a Ruby module? — Ans: To make the method callable directly on the module without including it | Ruby

Ruby - Modules and Mixins

What is the purpose of defining methods with self. inside a Ruby module?

ATo make the method private within the module

BTo define instance methods for objects including the module

CTo allow the method to be inherited by classes automatically

DTo make the method callable directly on the module without including it

Step-by-Step Solution

Solution:

Step 1: Understand method definition with self. in modules
Methods prefixed with self. inside a module become module methods callable on the module itself.
Step 2: Compare with instance methods in modules
Instance methods require including the module in a class to be used, but self. methods do not.
Final Answer:
To make the method callable directly on the module without including it -> Option D
Quick Check:
Module method definition = B [OK]

Quick Trick: Use self. to call methods directly on modules [OK]

Common Mistakes:

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What is the purpose of defining methods with self. inside a Ruby module?