August 27 2007 , 19:35

我路过看哈

下一秒 | Top

August 28 2007 , 15:23

Result is a ValueType ?

9 | Top

August 28 2007 , 16:04

[quote=9]
Result is a ValueType ?
[/quote]
yes,Result is a ValueType.
这是BlogEngine.Net 1.1中的代码
Resule是一个struct
struct是不能同null进行比较的

幻想曲 | Top

August 28 2007 , 17:44

so, x==null is always false!

you can check ValueType's source code!

public override bool Equals(object obj)
{
if (obj == null)
{
return false;
}
....

9 | Top

August 29 2007 , 08:28

this is Result ValueType's Source code

public struct Result
{
public Post _post;
public int rank;
public Result(Post post)
{
_post = post;
rank = 0;
}
public override bool Equals(object obj)
{
if (_post.GetHashCode() == obj.GetHashCode())
return true;
else
return false;
}
public static bool operator ==(Result a, Result b)
{
return (a == b && b == a);
}
public static bool operator !=(Result a, Result b)
{
return !(a == b);
}
public override int GetHashCode()
{
return _post.GetHashCode();
}
public override string ToString()
{
return _post.ToString();
}
}

幻想曲 | Top

August 29 2007 , 10:54

null can't auto unbox,
ValueType==null is always false!

Just Do this:

private static int CompareByRank(Result? x, Result? y){
....
}

9 | Top

August 31 2007 , 20:22

今天用了个宽屏显示器，才感受你三栏的漂亮。
是说，以前都是错位的。

下一秒 | Top

August 31 2007 , 21:14

OMG
不要告诉我说你一直看到的都是错位的!-____-##

幻想曲 | Top

September 15 2007 , 18:00

真好听!

侯建山 | Top

December 25 2007 , 15:20

曾经非常喜欢《寂寞在唱歌》

英锦纳 | Top

December 26 2007 , 19:33

我也非常喜欢，常常一个人静静地听！

travel | Top

December 26 2007 , 19:35

喜欢，很好听！

travel | Top