[Solved] What will be the output of this Ruby code?module Mixin def greet 'Hello from Mixin' end end class Parent def greet 'Hello from Parent' end end class Child | Ruby

Ruby - Inheritance

What will be the output of this Ruby code?

module Mixin
  def greet
    'Hello from Mixin'
  end
end

class Parent
  def greet
    'Hello from Parent'
  end
end

class Child < Parent
  include Mixin
end

puts Child.new.greet

AHello from Mixin

BHello from Parent

CNoMethodError

DSyntaxError

Step-by-Step Solution

Solution:

Step 1: Understand method lookup with modules
Including a module in a class inserts the module above the class in the method lookup chain.
Step 2: Determine which greet method is called
Child includes Mixin, so greet from Mixin overrides Parent's greet.
Final Answer:
Hello from Mixin -> Option A
Quick Check:
Module method overrides parent method = Hello from Mixin [OK]

Quick Trick: Included modules override parent class methods [OK]

Common Mistakes:

Assuming parent method always overrides module methods
Confusing include with inheritance
Expecting NoMethodError when method exists in module

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More Ruby Quizzes

What will be the output of this Ruby code?

Step 1: Understand method lookup with modules

Step 2: Determine which greet method is called

Final Answer:

Quick Check:

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