Re: Create Generic Class with String?

I create generic class. The type T is to be std::string or
std::wstring. I declare t variable to static const because I do not
want to modify string. C++ Compiler complies without errors.
If you add std::cout to the main function body, then C++ Compiler
will fail to compile and the error message says

c:\my projects\colors\colors\main.cpp(1438) : error C2373: 't' :
redefinition; different type modifiers
       c:\my projects\colors\colors\main.cpp(1434) : see declaration
of 't'
       c:\my projects\colors\colors\main.cpp(1438) : while compiling
class template static data member 'const std::string Foo<T>::t'
       with
       [
           T=std::string
       ]
       c:\my projects\colors\colors\main.cpp(1444) : see reference to
class template instantiation 'Foo<T>' being compiled
       with
       [
           T=std::string
       ]

template< typename T >
class Foo
{
public:
Foo<T>() {}
~Foo<T>() {}

static const T t;
};

template< typename T >
T Foo<T>::t = "Hello World!\n";

int main()
{
Foo<std::string> f;
std::cout << f.t;

return 0;
}

What happen if I declare std::wstring instead of std::string? C++
Compiler will fail to compile because ?L? is not added before string
?Hello World!\n?.
I do not want to create two separate classes. One is for string and
another one is for wstring. I add preprocessor condition.

#if !defined( UNICODE )
template< typename T >
std::string Foo<T>::Text = "Hello World!\n";
#else
template< typename T >
std::wstring Foo<T>::wText = L"Hello World!\n";
#endif

Do you have the solution?