From: Christoph <chr_news@...>
Date: 2002-02-20T08:17:59+09:00
Subject: Re: FalseClass / TrueClass singleton methods?


"Paul Brannan" <paul@atdesk.com> wrote in
....
> This is not entirely true...
>
>   class << TrueClass
>     remove_method :new
>   end
>
>   p TrueClass.new
>
> but, of course, you should not do this :)

Interesting - in cvs that would be
----
class << TrueClass
    remove_method :new
    remove_method :allocate
end

# The resulting

    pauls_truth = TrueClass.new

# works as expected - however neither works for FalseClass nor NilClass
# - i.e. the barbwires of reintroducing new (and assuming cvs) allocate are higher

class << NilClass
    def new; end
    def allocate; end
     remove_method :new
    remove_method :allocate
    def new; super end
    def allocate; super end
end

# and the resulting

   christophs_nil = NilClass.new

# unfortunately (but not unexpectedly) does not quite work (as expected) - e.g.

  p  christophs_nil | nil  # => false  - which  is wrong, however
  p  nil | christophs_nil  # => true
  p christophs_nil.nil?    # => true
----

 /Christoph