static void Main(string[] args)
{
Console.WriteLine("***** Fun with the Yield keyword *****\n");
Garage carLot = new Garage();
//get items with GetEnumerator()
foreach (Car c in carLot)
{
Console.WriteLine("{0} is going {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.WriteLine();
//get dem items in reverse using the named iterator
foreach (Car c in carLot.GetTheCars(true))
{
Console.WriteLine("{0} is going {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.ReadLine();
}
static void Main(string[] args) {
Garage carLot = new Garage();
foreach (Car c in carLot) {
Console.WriteLine("{0} is going {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.WriteLine();
Console.WriteLine("=> Using IEnumerator");
IEnumerator i = carLot.GetEnumerator();
i.MoveNext();
Car myCar = (Car)i.Current;
Console.WriteLine("{0} is going {1} MPH", myCar.PetName, myCar.CurrentSpeed);
Console.WriteLine();
Console.WriteLine("=> Using named iterator");
foreach (Car c in carLot.GetTheCars(true)) {
Console.WriteLine("{0} is going {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with the Yield Keyword *****\n");
Garage carLot = new Garage();
// This uses the Garage default enumerator
Console.WriteLine("Show using the default iterator");
foreach (Car c in carLot)
{
Console.WriteLine(c);
}
Console.WriteLine();
// Get items using named iterator.
Console.WriteLine("Show using GetTheCars(false)");
foreach (Car c in carLot.GetTheCars(false))
{
Console.WriteLine(c);
}
Console.WriteLine();
// Get items (in reverse!) using named iterator.
Console.WriteLine("Show in reverse using GetTheCars(true)");
foreach (Car c in carLot.GetTheCars(true))
{
Console.WriteLine(c);
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Custom Iterator using yield! *****\n");
Garage carLot = new Garage();
// try
// {
// IEnumerator carEnumerator = carLot.GetEnumerator();
// }
// catch (Exception e)
// {
// Console.WriteLine($"Exception occured on GetEnumerator");
//}
foreach (Car c in carLot)
{
Console.WriteLine("{0} is going {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.WriteLine();
foreach (Car c in carLot.GetTheCars(true))
{
Console.WriteLine("{0} is going {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with the Yield Keyword *****\n");
Garage carLot = new Garage();
//Next line demonstrates the delayed error error
//IEnumerator carEnumerator = carLot.GetEnumerator();
// Get items using GetEnumerator().
foreach (Car c in carLot)
{
Console.WriteLine("{0} is going {1} MPH",
c.PetName, c.CurrentSpeed);
}
Console.WriteLine();
// Get items (in reverse!) using named iterator.
foreach (Car c in carLot.GetTheCars(true))
{
Console.WriteLine("{0} is going {1} MPH",
c.PetName, c.CurrentSpeed);
}
Console.ReadLine();
}
static void WithYield()
{
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("=> compare with named iterator");
Garage carLot = new Garage();
foreach (Car c in carLot)
{
Console.WriteLine($"{c.PetName} is going {c.CurrSpeed} MPH");
}
Console.WriteLine("-> using GetTheCars");
foreach (Car c in carLot.GetTheCars(true))
{
Console.WriteLine($"{c.PetName} is going {c.CurrSpeed} MPH");
}
}
static void Main(string[] args)
{
Console.WriteLine("****** Fun with the Yield keyword ******\n");
Garage carLot = new Garage();
// Get items using GetEnumerator();.
foreach (Car c in carLot)
{
Console.WriteLine("{0} is going at a speed of {1} KMH", c.PetName, c.CurrSpeed);
}
Console.WriteLine();
// Get items (in reverse!) using named iterator
foreach (Car c in carLot.GetTheCars(true))
{
Console.WriteLine("{0} is going at a speed of {1} KMH", c.PetName, c.CurrSpeed);
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun wit the Yield Keyword *****\n");
Garage carLot = new Garage();
foreach (Car c in carLot)
{
Console.WriteLine("{0} is going {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.WriteLine();
foreach (Car c in carLot.GetTheCars(true))
{
Console.WriteLine("{0} is going {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with the Yield Keyword *****\n");
Garage carLot = new Garage();
//No exception at this point without local function
//IEnumerator carEnumerator = carLot.GetEnumerator();
//try
//{
// //Error at this time
// carEnumerator.MoveNext();
//}
//catch (Exception e)
//{
// Console.WriteLine($"Exception occurred on MoveNext");
//}
try
{
//Error at this time
var carEnumerator = carLot.GetEnumerator();
}
catch (Exception e)
{
Console.WriteLine($"Exception occurred on GetEnumerator");
}
//Get items using GetEnumerator().
foreach (Car c in carLot)
{
Console.WriteLine("{0} is going {1} MPH",
c.PetName, c.CurrentSpeed);
}
Console.WriteLine();
//Get items(in reverse!) using named iterator.
foreach (Car c in carLot.GetTheCars(true))
{
Console.WriteLine("{0} is going {1} MPH",
c.PetName, c.CurrentSpeed);
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("**** Fun with yield keyword ****");
Garage carLot = new Garage();
foreach (Car c in carLot)
{
Console.WriteLine("{0} is going {1} KPH", c.PetName, c.CurrSpeed);
}
Console.WriteLine();
Console.WriteLine("Get cars in reversed:");
foreach (Car c in carLot.GetTheCars(true))
{
Console.WriteLine("{0} is going {1} KPH", c.PetName, c.CurrSpeed);
}
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with the Yield Keyword *****\n");
Garage carlot = new Garage();
//使用GetEnumerator()获取项
foreach (Car c in carlot)
{
Console.WriteLine("{0} is going {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.WriteLine();
foreach (Car c in carlot.GetTheCars(true))
{
Console.WriteLine("{0} is going {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.ReadLine();
}
static void Main(string[] args)
{
Garage carLot = new Garage();
// Get items using the GetEnumerator()
foreach (Car c in carLot) // same as ( Car c in carLot.GetEnumerator() )
{
Console.WriteLine("{0} is goinf {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.WriteLine();
// Get items in reverse using named iterator
foreach (Car c in carLot.GetTheCars(true))
{
Console.WriteLine("{0} is goinf {1} MPH", c.PetName, c.CurrentSpeed);
}
Console.ReadLine();
}
