Unity事件与委托

    string GetMaxID(Car[] cars)
    {
        string Name = "";
        int MaxID = 0;
        foreach (var item in cars)
        {
            if (MaxID < item.ID)
            {
                MaxID = item.ID;
                Name = item.NAME;
            }
        }
        return Name;
    }

    string GetMaxLong(Car[] cars)
    {
        string Name = "";
        int MaxID = 0;
        foreach (var item in cars)
        {
            if (MaxID < item.LONG)
            {
                MaxID = item.LONG;
                Name = item.NAME;
            }
        }
        return Name;
    }
        string MaxID = GetMaxID(cars);
        string MaxLong = GetMaxLong(cars);

两段查找代码中，代码冗余不美观

引入委托

 	delegate int GetMax(Car cars);

    int _ID(Car cars)
    {
        return cars.ID;
    }

    int _Long(Car car)
    {
        return car.ID;
    }
        string GetMaxSome(Car[] cars, GetMax getMax)
       {
        string Name = "";
        int Max = 0;
        foreach (var item in cars)
        {
            int Temp_Value = getMax(item);
            if (Max < Temp_Value)
            {
                Max = Temp_Value;
                Name = item.NAME;
            }
        }
        return Name;
    }
    
        GetMaxSome(cars, _Long);
        GetMaxSome(cars, _ID);
    

引入lambda表达式进一步优化

	delegate int GetMax(Car cars);
	
	 string GetMaxSome(Car[] cars, GetMax getMax)
	{
        string Name = "";
        int Max = 0;
        foreach (var item in cars)
        {
            int Temp_Value = getMax(item);
            if (Max < Temp_Value)
            {
                Max = Temp_Value;
                Name = item.NAME;
            }
        }
        return Name;
    }
    
	GetMaxSome(cars, car => car.ID);
	GetMaxSome(cars, car => car.LONG);

因为_ID 和 _Long 仅使用了一次，所以可以通过lambda表达式代替从而简化代码