Re: Non-template Definition Error

From:

Victor Bazarov <v.Abazarov@comAcast.net>

Newsgroups:

comp.lang.c++

Date:

Tue, 13 Jan 2009 12:58:07 -0500

Message-ID:

<gkiknf$smj$1@news.datemas.de>

crjjrc wrote:

I'm having trouble figuring out a problem in the following code:

template<class T, int ndims>
class NFieldBase {
public:
static const T max;
};

template<int ndims> const float NFieldBase<float, ndims>::max = 1.0f;

When compiled with g++, I get this error:

test.cpp:7: error: template definition of non-template ?const float
NFieldBase<float, ndims>::max?

Especially confounding is that if I take out every instance of the
ndims template parameter, this code compiles just fine. Has g++
spoiled me and should this not compile in general? Or is there
something different I must be doing if I have more than one parameter?

So, you're trying to define the member of a specialisation without
actually defining the specialisation itself, right? I am not sure it's
allowed. Try your code with Comeau online (www.comeaucomputing.com) and
see what they say. They've been pretty close to the Standard AFA
templates are concerned.

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask