Re: More templates

From:
"mlimber" <mlimber@gmail.com>
Newsgroups:
comp.lang.c++
Date:
18 Jul 2006 11:46:27 -0700
Message-ID:
<1153248387.299440.217830@b28g2000cwb.googlegroups.com>
Hans wrote:

Thanks guys,

Unfortunately I still get an error. I have removed the SystemC stuff and
created a simple C++ example using the same template coding style as in the
FAQ, for some reason Visual C++ doesn't like the "simple template class"
solution, I did change the template<typename T> to template<int T> any idea?

// File "Foo.h"
template<int T>
class Foo {
    public:
    void g();
};

// File "Foo.cpp"
#include <iostream>
#include "Foo.h"
template<int T>
void Foo<T>::g()
{
    std::cout << "T=" << T << std:endl;


You meant std::endl.

}
template class Foo<int>; // Error C2975, without it LNK2019 Error


This line is non-sense in context. You are instantiation Foo<> with a
type rather than a constant int.

// File "main.cpp"
#include "Foo.h"
int main()
{
    Foo<4> x;
    x.g();
}


The same comments about putting implementations for templates in the
header apply, and in fact, everything links fine if you fix the two
above errors and make sure all this code is visible in a single
translation unit.

Cheers! --M

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