From: Christoph <chr_news@...>
Date: 2002-10-02T09:41:17+09:00
Subject: Re: thoughts on typelessness

"GOTO Kentaro" wrote
....
>
> I think "%s" % obj is a kind of implicit conversion.
>
>   % ruby -e 'now = Time.now; def now.to_s() "now" end; puts "%s" % now'
>   now
>   %

The "print String"  conversion seems to follow non obvious
rules - for example no recursion seems to possible ...
--
class A
  attr_accessor :x
  def initialize(x)
    @x = x
  end
  def inspect
    B.new(x+"b")
  end
end

class B  < A
  def inspect
    C.new(x+"c")
  end
  alias to_s   inspect
end

class C < String
  def inspect
    ignored
  end
  alias to_s  inspect
end

p A.new("a") # abc

class T
  def T.inspect; ignored end
  def T.to_s; ignored end
end

class B
  def inspect
    T
  end
  alias to_s   inspect
end

p A.new("a")  #  #<B:0x2788b60>

---

/Christoph