Hedgehog

摘要： 一、类定义class Account attr_accessor :number @@count = 0 def initialize(number, name, balance) @number = number @name = name @balance = balance @@count = @@count + 1; end def Account.count @@count end def Account.count=(value) @@count = value end def name @name end def name=(value) @name = value end def 阅读全文