[Solved] What does adding self. before a method name inside a Ruby class do? — Ans: Makes the method a class method, callable on the class itself | Ruby

Ruby - Class Methods and Variables

What does adding self. before a method name inside a Ruby class do?

ADefines a method that can only be called inside other methods

BMakes the method private and inaccessible outside the class

CMakes the method an instance method, callable on objects

DMakes the method a class method, callable on the class itself

Step-by-Step Solution

Solution:

Step 1: Understand the role of self. in method definition
In Ruby, prefixing a method name with self. inside a class defines it as a class method.
Step 2: Identify how class methods are called
Class methods are called on the class itself, not on instances of the class.
Final Answer:
Makes the method a class method, callable on the class itself -> Option D
Quick Check:
self.method_name defines class method [OK]

Quick Trick: Remember: self.method means class method, no instance needed [OK]

Common Mistakes:

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What does adding self. before a method name inside a Ruby class do?