namespace DesignPrinciples.LowOfDemeter
{
    class Program
    {
        static void Main(string[] args)
        {
            GroupLeader group = new GroupLeader();
            Teacher teacher = new Teacher();
            teacher.Command(group);
            Console.WriteLine("==== 我是分割線 ====");
            teacher.CommandByDemeter(group);
        }
    }

    public class Teacher
    { 
        /// <summary>
        /// 教師發(fā)送命令
        /// </summary>
        /// <param name="group"></param>
        public void Command(GroupLeader group)
        {
            List<Student> students = new List<Student>();
            for (int i = 0; i < 20; i++)
            {
                students.Add(new Student());
            }
            group.Count(students);
        }

        public void CommandByDemeter(GroupLeader group)
        { 
            group.CountByDemeter();
        }
    }

    public class GroupLeader
    {
        /// <summary>
        /// 學習委員點名
        /// </summary>
        /// <param name="girls"></param>
        public void Count(List<Student> girls)
        {
            Console.WriteLine("學生人數(shù)：" + girls.Count);
        }

        public void CountByDemeter()
        {
            List<Student> students = new List<Student>();
            for (int i = 0; i < 20; i++)
            {
                students.Add(new Student());
            }
            Console.WriteLine("學生人數(shù)（迪米特）：" + students.Count);
        }
    }

    public class Student
    {
        public string Name { get; set; }
    }
}