From: coma_killen@...
Date: 2002-11-11T13:49:38+09:00
Subject: Klass.method(:new).arity == -1 violates my POLS!

Hi,

This is not what I expected:

class K
  def K.newp(a); end
  def initialize(a); end
end

p K.method(:newp).arity #=> 1
p K.method(:new).arity #=> -1

My intuition would be that the knowledge that initialize
takes only 1 param would be known to the new method. I think
this might make sense if you've fully grasped Ruby's dynamic 
nature => I haven't.

Anyone can explain why it has to be like this?

Is there some way to get to know the arity of new/initialize?

Regards,

Karsten


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