C# (CSharp) VisitorPattern FinancialReport示例

示例#1

        public override void VisitFinancialReport(FinancialReport report)
        {
            int income = report.GetIncome() - report.GetExpenditure();

            Console.WriteLine("财务报表，总收入：" + income);
        }

示例#2

 public override void VisitFinancialReport(FinancialReport report)
 {
     //不关心财务报表
 }

示例#3

 public abstract void VisitFinancialReport(FinancialReport report);