隐式重载，非静态 [英] Implicit overloads, non static

问题描述

我已经定义了一些隐式转换器，以便我可以这样做：


MyStruct x = 4;


将4隐式转换为MYSTRUCT。但它本质上是一个副本

构造函数，因此如果我有：


MyStruct x;

x.SomethingElse = 5;

x = 4;


现在x.SomethingElse将为0，因为x是一个新实例。好的 - 一切正常

并且已经执行 - 这里没有问题。


我想*做*是这样的。有5更新对象=不替换

它。我不寒而栗，将这与VB'旧的默认属性进行比较。但

基本上就是这样的东西。


这实际上是一个非静态的重载，据我所知，C＃并不是
支持这个正确吗？还有没有办法在隐式转换器中访问当前实例

？

-

Chad Z. Hower（又名Kudzu） - http://www.hower.org/Kudzu/

编程是一种反击的艺术形式


使用IntraWeb支持ASP.NET
http://www.atozed.com/IntraWeb/

解决方案

>我愿意*做的就是这个。有5更新对象=不是

替换

它。

你能详细说明吗？我不明白你的意思。

Chad Z. Hower aka Kudzu< cp ** @ hower.org>写道：

我已经定义了一些隐式转换器，以便我可以做到：

MyStruct x = 4;

隐式将4转换为MyStruct 。但它本质上是一个复制
构造函数，因此如果我有：

MyStruct x;
x.SomethingElse = 5;
x = 4;

现在x.SomethingElse将为0，因为x是一个新实例。好的 - 一切正常
和执行 - 这里没有任何问题。

我愿意*做的是这样做。有5更新对象=不替换它/它。我不寒而栗，将这与VB'旧的默认属性进行比较。但是
基本上就是这样的东西。

这实际上是一个非静态的重载，据我所知，C＃不支持这个正确吗？还有没有办法在隐式转换器中访问当前实例？

我不相信有什么办法可以做这个，坦率地说，我很高兴 -

以上的东西会使你的代码*非常不直观，IMO。

哎呀，即使隐含的转换也很糟糕尊重，没有

进一步滥用...


-

Jon Skeet - < sk *** @ pobox .com>
http://www.pobox.com/~skeet

如果回复小组，请不要给我发邮件

" Bruce Wood" <峰; br ******* @ canada.com>在新闻中写道：1115311764.128722.235310

@ o13g2000cwo.googlegroups.com：

你能详细说明吗？我不知道你的意思。

我不确定我能说得多多 - 它非常详细。 :)

-

Chad Z. Hower（又名Kudzu） - http://www.hower.org/Kudzu/

编程是一种反击的艺术形式

使用IntraWeb启动ASP.NET！
http： //www.atozed.com/IntraWeb/

I have defined some implicit convertors so that I can do:

MyStruct x = 4;

The implicit convert the 4 into MyStruct. But its essentially a copy
constructor and thus if I had:

MyStruct x;
x.SomethingElse = 5;
x = 4;

Now x.SomethingElse will be 0, because x is a new instance. Ok - all proper
and as exected - no questions here.

What I would *like* to do is this. Have the 5 update the object = not replace
it. I shudder to compare this to VB''s old "default properties" but
essentially soemething like that.

This is really a non static overload, and as I understand it, C# does not
support this correct? And also there is no way to access the current instance
in the implicit convertors?
--
Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/
"Programming is an art form that fights back"

Empower ASP.NET with IntraWeb
http://www.atozed.com/IntraWeb/

解决方案

> What I would *like* to do is this. Have the 5 update the object = not
replace

it.

Could you elaborate? I have no idea what you mean by this.

Chad Z. Hower aka Kudzu <cp**@hower.org> wrote:

I have defined some implicit convertors so that I can do:

MyStruct x = 4;

The implicit convert the 4 into MyStruct. But its essentially a copy
constructor and thus if I had:

MyStruct x;
x.SomethingElse = 5;
x = 4;

Now x.SomethingElse will be 0, because x is a new instance. Ok - all proper
and as exected - no questions here.

What I would *like* to do is this. Have the 5 update the object = not replace
it. I shudder to compare this to VB''s old "default properties" but
essentially soemething like that.

This is really a non static overload, and as I understand it, C# does not
support this correct? And also there is no way to access the current instance
in the implicit convertors?

I don''t believe there''s any way to do this, and frankly I''m glad -
things like the above would make your code *very* unintuitive, IMO.
Heck, even implicit conversions are bad enough in that respect, without
further abuse...

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

"Bruce Wood" <br*******@canada.com> wrote in news:1115311764.128722.235310
@o13g2000cwo.googlegroups.com:

Could you elaborate? I have no idea what you mean by this.

Im not sure I can elaborate much more - its pretty detailed. :)
--
Chad Z. Hower (a.k.a. Kudzu) - http://www.hower.org/Kudzu/
"Programming is an art form that fights back"

Get your ASP.NET in gear with IntraWeb!
http://www.atozed.com/IntraWeb/

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