public class List
{
//using System.Collections;
public static IEnumerable Power(int number, int exponent)
{
int counter = 0;
int result = 1;
while (counter++ < exponent)
{
result = result * number;
yield return result;
}
}
static void Main()
{
// Display powers of 2 up to the exponent 8:
foreach (int i in Power(2, 8))
{
Console.Write("{0} ", i);
}
}
}
/*
Output:
2 4 8 16 32 64 128 256
*/
------解决方案-------------------- 当然 .NET 2.0 以后 使用Ilist 反省要好多了
C# code
static IEnumerable<int> WithYield()
{
for (int i = 0; i < 20; i++)
{
Console.WriteLine(i.ToString());
if(i > 2)
yield return i;
}
}
------解决方案--------------------