Programming Forums - namespace alias?

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- - namespace alias? (http://www.programmingforums.org/showthread.php?t=12185)

iradic

Dec 14th, 2006 7:42 PM

namespace alias?

How to use it correctly?

I have a header where I put

namespace out {

class in { /* code */ };

}

Now how do I make "namespace alias" in cpp file?

Trying:

namespace new = out::in;

doesn't work...

Error:

expected namespace-name before ';' token

unknown namespace `<declaration error>

'new' has not been declared

cc: gcc 3.4.2
os: windows 2000

Thanks

PS: Code compiles when I type full namespace names ...

Jessehk

Dec 14th, 2006 8:00 PM

I think it's:

namespace new = out;

As it stands, it looks like your are trying to make a namespace an alias for a class.

Klarre

Dec 14th, 2006 8:11 PM

You use the namespaces like this:

namespace out

{

    class in {};

}



int main()

{

    out::in* instance = new out::in;

}

iradic

Dec 14th, 2006 9:45 PM

Ok, thanks... I understand now...

Jessehk

Dec 14th, 2006 9:46 PM

He is not trying to make an instance of a class (at least, I don't think he is).

He's trying to make an alias for a namespace.

EDIT: I was just proven wrong. :p Why did you say "alias" then, iradic?

DaWei

Dec 14th, 2006 9:49 PM

In any case, you don't use 'new' as if it's a variable for assignment, it's a keyword.

iradic

Dec 14th, 2006 10:25 PM

Confusion all over the place... :)

Jessehk correctly read my mind...

Thanks again bye..

PS: I will edit original post.

iradic

Dec 14th, 2006 10:28 PM

Edit doesn't show in my first post?

DaWei

Dec 14th, 2006 11:00 PM

You can't edit after 30 minutes. Regarding editing, it's better if you ADD or EXPLAIN things in a edit (other than typos, of course), after responses have been received, so that the original meaning of the thread doesn't go south.

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