[Solved] Identify the error in this Ruby code snippet: class Cat def self.meow puts "Meow!" end def meow puts "Meow from instance" end def self.instance_meow meow end end Cat.instance_meow | Ruby

Ruby - Classes and Objects

Identify the error in this Ruby code snippet:

class Cat
  def self.meow
    puts "Meow!"
  end

  def meow
    puts "Meow from instance"
  end

  def self.instance_meow
    meow
  end
end

Cat.instance_meow

AMissing <code>self</code> in instance method definition

BCalling instance method <code>meow</code> inside a class method without an instance

CIncorrect syntax for class method definition

DUsing <code>puts</code> inside methods is not allowed

Step-by-Step Solution

Solution:

Step 1: Analyze method calls inside self.instance_meow
This is a class method trying to call meow without specifying an instance.
Step 2: Understand method types
meow without self. is an instance method, so it needs an object to call it on.
Step 3: Identify the error
Calling an instance method directly inside a class method causes a NoMethodError because no instance is given.
Final Answer:
Calling instance method meow inside a class method without an instance -> Option B
Quick Check:
Class methods cannot call instance methods without an object [OK]

Quick Trick: Class methods need an instance to call instance methods [OK]

Common Mistakes:

Trying to call instance methods directly inside class methods
Confusing self in class vs instance methods
Ignoring need for object to call instance methods

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More Ruby Quizzes

Identify the error in this Ruby code snippet:

Step 1: Analyze method calls inside `self.instance_meow`

Step 2: Understand method types

Step 3: Identify the error

Final Answer:

Quick Check:

Want More Practice?

Identify the error in this Ruby code snippet:

Step 1: Analyze method calls inside self.instance_meow

Step 2: Understand method types

Step 3: Identify the error

Final Answer:

Quick Check:

Want More Practice?

Step 1: Analyze method calls inside `self.instance_meow`