using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;namespace Itcast.Mall.ConsoleApp
{
class Program
{
static void Main(string[] args)
{
string[] strs = new string[] { "", "", "" };
IEnumerable<int> ints = GetInts(strs);
foreach (var item in ints)
{
//测试,当item的值大于1后,下面GetInts里的foreach只会执行到这个对应的值,后面的就冻结,不执行了,节约资源;
if (item > )
{
break;
}
Console.WriteLine(item);
}
Console.ReadKey();
}
static IEnumerable<int> GetInts(string[] strs)
{
foreach (var item in strs)
{
Console.WriteLine(item.GetType());
yield return Convert.ToInt32(item);
}
}
}
}