Ruby constant within a class method

Question

 class A
   class << self
     CONST = 1
   end
 end

 puts A::CONST    # this doesn't work

Is there a way to access the constant from outside the class with this self class call?

It is effectively doing this:

class A
    self.CONST = 1
end

I understand that I can just move the constant out of this self call to easily solve this problem. I'm more curious about the inner workings of ruby.

Answer 1

Not exactly what you wanted, but you simply haven't defined CONST inside class A but in its metaclass, which I have therefore saved a reference to...

class A
  class << self
    ::AA = self
    CONST = 1
  end
end
puts AA::CONST