柚子快报邀请码778899分享：C#隐式类型
隐式类型
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace 隐式类型var
{
class Program
{
static void Main(string[] args)
{
//优点：不需要在左侧也加上Dictionary
var dict = new Dictionary
//缺点：从代码上来看不知道具体类型，不容易理解
var a = 2147483649;
var b = 928888888888888888;
var c = 2147483644;
Console.WriteLine("变量a的类型为:{0}", a.GetType());
Console.WriteLine("变量b的类型为:{0}", b.GetType());
Console.WriteLine("变量c的类型为:{0}", c.GetType());
//隐式类型数组
var intarray = new[] { 1, 2, 3, 4 };
var stringarray = new[] { "s", "ad" };
//匿名类型
var person = new { Name = "谢峰", Age = "23" };
Console.WriteLine("{0} 的年龄为：{1}", person.Name, person.Age);
//定义匿名类型数组
var personcollection = new[]
{
new {Name="sam",Age=13},
new {Name="tom",Age=14},
new {Name="jeny",Age=17},
};
var totalAge = 0;
foreach (var p in personcollection)
{
totalAge += p.Age;
}
Console.WriteLine("所有人的年龄和为：{0}", totalAge);
Console.Read();
}
}
}
柚子快报邀请码778899分享：C#隐式类型
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