Question

For instance:

class MyClass
    @@var1 = '123456'
    def self.var1
        @@var1
    end

    class << self
        attr_accessor :var2
        def self.initialize
          self.var2 = 7890
        end
    end

end

 p MyClass.var1 # "123456"
 p MyClass.var2 # nil

Is there any way to initialize var2?

Answer 1

You could do this if var2 is not a boolean.

class MyClass
  class << self
    attr_writer :var2
  end

  def self.var2
    @@var2 ||= 'my init value'
  end
end