Private class methods in Ruby

test.rb

class Person

  def self.get_name
    persons_name
  end

  def self.persons_name
    "Sam"
  end
  private_class_method :persons_name
end

puts "Hey, " + Person.get_name # Works fine
puts "Hey, " + Person.persons_name # Raises

Or, you can define it in the eigenclass directly.

clas << self
  def persons_name
    "Sam"
  end
end