From: mengx@... Date: 2001-12-07T00:38:29+09:00 Subject: [ruby-talk:27698] NilClass methods Hi, I wonder the meaning of the few methods of NilClass such as nil.to_i => 0 A variable that is nil means no-existence or invalid or due for GCed. Would it be reasonable to say that "to_i/to_a/to_s" method should raise exception? What would be the implications if I turn those methods off? Thanks -Ted