% rails c Loading development environment (Rails 4.0.0.beta1) > hoge = Hoge.new => #<Hoge id: nil, created_at: nil, updated_at: nil> > open('methods.txt', 'w'){ |file| > file.print(hoge.methods.join("\n")) > } => nil ! != !~ <=> == === =~ [] []= __id__ __send__ _attr_readonly _commit_callbacks _commit_callbacks= _commit_callbacks? _create_callbacks _create_callbacks= _create_callbacks? _destroy _d