::运算符和“全局”运算符。 [英] The :: operator, and "global"

问题描述

我在最近的帖子中看到::运算符用于到达全局命名空间，



global :: MyNamespace


之前我没有见过这个，所以在MSDN中查找了它，它解释了它很好。我的问题是，做全球吗？和::总是一起去？这些运营商还有其他用途吗？比如一对吗？


TIA，


Javaman

I saw in a recent post the :: operator used to reach the global namespace, as
in

global::MyNamespace

I hadn''t seen this before, so looked it up in MSDN, which explained it
nicely. My question is, do "global" and "::" always go together? Is there any
other use for these operators, than as a pair?

TIA,

Javaman

推荐答案

Javaman，

AFAIK，没有全球的c＃2.0中的关键字。你只使用运算符'''''

来表示编译器从''outest'范围开始搜索：


命名空间A {

命名空间系统{

class X {

public void消息（字符串s）

{

:: System.Windows.Forms.MessageBox.Show（s）; //'''''需要这里

}

}

}

}


问候 - Octavio

" Javaman59" < JA ******* @ discussions.microsoft.com> escribióenel mensaje

news：76 ********************************** @ microsof t.com ...

Javaman,

AFAIK, there''s no "global" keyword in c# 2.0. You only use the operator ''::''
to indicate the compiler to start the search from the ''outest'' scope:

namespace A {
namespace System {
class X {
public void Message(string s)
{
::System.Windows.Forms.MessageBox.Show(s); // ''::'' needed here
}
}
}
}

Regards - Octavio
"Javaman59" <Ja*******@discussions.microsoft.com> escribió en el mensaje
news:76**********************************@microsof t.com...

我在最近的帖子中看到::运算符用于到达全局命名空间，


global :: MyNamespace

之前我没有见过这个，所以在MSDN中查找了它，很好地解释了它。我的问题是，做全球吗？和::总是一起去？对于这些操作员来说，还有其他用途吗？比如一对吗？

TIA，

Javaman

I saw in a recent post the :: operator used to reach the global namespace,
as
in

global::MyNamespace

I hadn''t seen this before, so looked it up in MSDN, which explained it
nicely. My question is, do "global" and "::" always go together? Is there
any
other use for these operators, than as a pair?

TIA,

Javaman

您应该在发布之前检查。您的代码将无法编译 - 这就是C ++构造。 C＃v2中有一个全局关键字，它总是与::一起表示该类型的全局范围。


global :: System.Windows.Forms.MessageBox.Show（" ; foo"）;


问候


Richard Blewett - DevelopMentor
http://www.dotnetconsult.co.uk/weblog
http://www.dotnetconsult.co.uk


Javaman，


AFAIK，没有全球的c＃2.0中的关键字。你只使用运算符'''''

来表示编译器从''outest'范围开始搜索：


命名空间A {

命名空间系统{

class X {

public void消息（字符串s）

{

:: System.Windows.Forms.MessageBox.Show（s）; //'''''需要这里

}

}

}

}


问候 - Octavio

" Javaman59" < JA ******* @ discussions.microsoft.com> escribi？ en el mensaje

news：76 ********************************** @ microsof t.com ...

You should probably check before you post. Your code will not compile - thats a C++ construct. There is a global keyword in C# v2 and it always goes together with :: to indicate global scope of the type.

global::System.Windows.Forms.MessageBox.Show("foo" );

Regards

Richard Blewett - DevelopMentor
http://www.dotnetconsult.co.uk/weblog
http://www.dotnetconsult.co.uk

Javaman,

AFAIK, there''s no "global" keyword in c# 2.0. You only use the operator ''::''
to indicate the compiler to start the search from the ''outest'' scope:

namespace A {
namespace System {
class X {
public void Message(string s)
{
::System.Windows.Forms.MessageBox.Show(s); // ''::'' needed here
}
}
}
}

Regards - Octavio
"Javaman59" <Ja*******@discussions.microsoft.com> escribi? en el mensaje
news:76**********************************@microsof t.com...

我在最近的帖子中看到::运算符用于到达全局命名空间，
在

全局:: MyNamespace

之前我没有见过这个，所以在MSDN中查找了它，很好地解释了它。我的问题是，做全球吗？和::总是一起去？对于这些操作员来说，还有其他用途吗？比如一对吗？

TIA，

Javaman

I saw in a recent post the :: operator used to reach the global namespace,
as
in

global::MyNamespace

I hadn''t seen this before, so looked it up in MSDN, which explained it
nicely. My question is, do "global" and "::" always go together? Is there
any
other use for these operators, than as a pair?

TIA,

Javaman

[microsoft.public.dotnet.languages.csharp]

[microsoft.public.dotnet.languages.csharp]

Richard，


谢谢你校正。

实际上我做了那个检查，指的是我一直认为的MSDN杂志

优秀：

http://msdn.microsoft.com/msdnmag/is...0/ default.aspx


也许文章有点陈旧，规格从那时起发生了变化？


问候 - Octavio


" Richard Blewett [DevelopMentor]" < RI ****** @ NOSPAMdevelop.com> escribióen

el mensaje新闻：％2 **************** @ TK2MSFTNGP09.phx.gbl ...

Richard,

Thanks for your correction.
Actually I did that check, referring to a MSDN Magazine I always considered
excellent:

http://msdn.microsoft.com/msdnmag/is...0/default.aspx

Maybe the article is little bit old and specs have changed since then?

Regards - Octavio

"Richard Blewett [DevelopMentor]" <ri******@NOSPAMdevelop.com> escribió en
el mensaje news:%2****************@TK2MSFTNGP09.phx.gbl...

你应该在你发布之前检查。您的代码将无法编译 - 这就是C ++构造。 C＃v2中有一个全局关键字，它总是和::一起表示该类型的全局范围。

global :: System.Windows.Forms.MessageBox.Show（" ; foo"）;

问候

Richard Blewett - DevelopMentor
http://www.dotnetconsult.co.uk/weblog
http://www.dotnetconsult.co.uk

Javaman，

AFAIK，没有 ;全球" c＃2.0中的关键字。您只能使用运算符
''::''
来指示编译器从''outest'范围开始搜索：

命名空间A {
namespace System {
class X {
public void Message（string s）
:: System.Windows.Forms.MessageBox.Show（s）; //''::''需要在这里
}
}
}

问候 - Octavio

" ; Javaman59" < JA ******* @ discussions.microsoft.com> escribi？ en el mensaje
新闻：76 ********************************** @ microsof t.com。 ..

You should probably check before you post. Your code will not compile -
thats a C++ construct. There is a global keyword in C# v2 and it always
goes together with :: to indicate global scope of the type.

global::System.Windows.Forms.MessageBox.Show("foo" );

Regards

Richard Blewett - DevelopMentor
http://www.dotnetconsult.co.uk/weblog
http://www.dotnetconsult.co.uk

Javaman,

AFAIK, there''s no "global" keyword in c# 2.0. You only use the operator
''::''
to indicate the compiler to start the search from the ''outest'' scope:

namespace A {
namespace System {
class X {
public void Message(string s)
{
::System.Windows.Forms.MessageBox.Show(s); // ''::'' needed here
}
}
}
}

Regards - Octavio
"Javaman59" <Ja*******@discussions.microsoft.com> escribi? en el mensaje
news:76**********************************@microsof t.com...

我在最近的帖子中看到::运算符用于到达全局
命名空间，


全局:: MyNamespace

之前我没有见过这个，所以在MSDN中查找了它，很好地解释了它。我的问题是，做全球吗？和::总是一起去？对于这些运营商来说还有其他用途，而不是作为一对吗？

TIA，

Javaman

I saw in a recent post the :: operator used to reach the global
namespace,
as
in

global::MyNamespace

I hadn''t seen this before, so looked it up in MSDN, which explained it
nicely. My question is, do "global" and "::" always go together? Is
there
any
other use for these operators, than as a pair?

TIA,

Javaman

[microsoft.public.dotnet.languages.csharp]

[microsoft.public.dotnet.languages.csharp]

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