--- size

    μΥХȿ֤ޤ

    ߤμǤ Fixnum ϡsizeof(long) (¿ 32
    bit ޥ 4 Х)Bignumϡƥ¸Ǥ

        p 1.size
        p 0x1_0000_0000.size
        # => 4
             8

