--- puts([obj[, obj2[, ....]]] )

    obj ȲԤ֤ $> [Ȥ߹ѿ] ˽Ϥޤ
    ʤвԤΤߤϤޤ

    ξ硢ǤȲԤ˽Ϥޤ
    ʸʳΥ֥ȤȤͿ줿ˤϡ
    ֥Ȥǽ to_ary ˤء
     to_s ᥽åɤˤʸѴߤޤ
    nil ФƤʸ "nil" Ϥޤ

    ԤǽäƤФƤ puts 
    ϲԤϤޤ

        puts "foo", "bar\n", "baz"
        puts ""    # ԤΤ߽
        puts       # ԤΤ߽
        puts "foo"
        => foo
           bar
           baz


           foo

    nil ֤ޤ

    print, warn ⻲ȡ

