Split a namespace in multiple files

[majidkamali1370]

Hi.
I want to create a namespace named MyNS.
Can I define it in multiple files?
I mean:

file1.h

namespace MyNS
{
   const int File1 = 0;
}

file2.h

namespace MyNS
{
   const int File2 = 1;
}

main.cpp

#include <iostream>
#include "file1.h"
#include "file2.h"
using namespace MyNS;

int main()
{
   std::cout << File1 << ' ' << File2 ;
}

[MiiNiPaa]

Why you didn't try it yourself? It's a trivial problem which you can solve like in 3 minutes. Posting there took you more time!

As for your question: yes, you can.

[Peter87]

@MiiNiPaa
If he tries this how do he know if this behaviour is standard or just specific to that compiler? C++ is not a try-and-see language. You need to know what you are doing.

[majidkamali1370]

I use GCC. does it need additional linker option?
Can I nest namespaces like this?

[Peter87]

No need for additional linker options, or anything. This is standard C++ and will work.

[zb0S216C]

majidkamali1370 wrote:

"Can I nest namespaces like this?"

A name-space can have as many name-space scopes as it wishes:

namespace Alpha
{
    namespace Bravo
    {
        namespace Charlie
        {
            namespace Delta
            {
                int Value_( 0 );
            }
        }
    }
}

int main( )
{
    Alpha::Bravo::Charlie::Delta::Value_ = ...;
}

_Wazzak

[majidkamali1370]

Thank you guys ;)