标签：des style blog http color os io ar 2014
关于泛型，我们在开发也经常用到，下面一起通过IL来查看一下泛型，代码如下：
using System;namespace MyCollection{public class GenericExample
{public static T GetT<T>(T value)
{return value;
}
public static void Main(string[] args)
{ int a = GetT(3);string str = GetT("I‘am String");
Console.WriteLine("value1:{0}\t Value2:{1}",a,str);}
}
}
通过这可以看到泛型在解释时，也会生成一个新的Class GetT(!!T):!!T
IL代码如下：
.method public hidebysig static
void Main ( string[] args) cil managed
{ // Method begins at RVA 0x218c // Code size 38 (0x26).maxstack 3
.entrypoint
.locals init (
[0] int32 a,
[1] string str)
IL_0000: nop
IL_0001: ldc.i4.3
//这里的T转成了int32IL_0002: call !!0 MyCollection.GenericExample::GetT<int32>(!!0)
IL_0007: stloc.0
IL_0008: ldstr "I‘am String" //而在这儿T的类型又转成了string IL_000d: call !!0 MyCollection.GenericExample::GetT<string>(!!0)IL_0012: stloc.1
IL_0013: ldstr "value1:{0}\t Value2:{1}"IL_0018: ldloc.0
IL_0019: box [mscorlib]System.Int32
IL_001e: ldloc.1
IL_001f: call void [mscorlib]System.Console::WriteLine(string, object, object)
IL_0024: nop
IL_0025: ret
} // end of method GenericExample::Main
所以可知泛型在运行时它会自动转化类型
标签：des style blog http color os io ar 2014
原文地址：http://www.cnblogs.com/zhaoqingqing/p/3953036.html
