The different ways to define class methods in Ruby.

gistfile1.rb

class MyClass
  # All of these are equivalent
  
  def self.myMethod
    true
  end

  def MyClass.myMethod
    true
  end

  class << self
    def myMethod
      true
    end
  end

  class << MyClass
    def myMethod
      true
    end
  end

end