[Solved] Identify the issue in this Ruby code:class Sample @@count = 5 def self.count @count end end puts Sample.count | Ruby

Ruby - Class Methods and Variables

Identify the issue in this Ruby code:

class Sample
  @@count = 5
  def self.count
    @count
  end
end

puts Sample.count

AThe method should be an instance method, not a class method

BThe class variable @@count is not initialized

CThe class method accesses an instance variable instead of the class variable

DThe code will raise a syntax error

Step-by-Step Solution

Solution:

Step 1: Analyze variable usage
The class method self.count accesses @count, which is a class instance variable, not the class variable @@count.
Step 2: Understand variable scope
@@count is a class variable shared across the class and instances, but @count here is nil because it was never set.
Final Answer:
The class method accesses an instance variable instead of the class variable -> Option C
Quick Check:
Class variables use @@, instance variables use @ [OK]

Quick Trick: Class methods need correct variable scope (@@ vs @) [OK]

Common Mistakes:

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