Re: [Boost-users] Problem with dll and BOOST_STATIC_ASSERT

John Maddock writes:

It's a weird error: I don't believe that the compiler should be instantiating those methods at all, but <shrug>.

I don't have access to any other compilers so don't know if it's a VStudio problem.

Partial specialisation works just fine in Visual Studio 2003 (VC7.1 and later).

I could never get it to work but it may be my lack of understanding even tho I looked at dozens of examples.

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Soln 3) I like this one but haven't made it work yet. It succeeds if I export the specialized Vector::Normal() but not if I export Vector3<T>::Normal () but i'm working on it

Your right, I've just tried it out, and it leads to even stranger errors: the template members get instantiated with some really strange argument types, I've no idea what's going on there at present.

I converted my template hierarchy to get rid of the Vector3<T> derivation and added the "low Dim" ctor's to the Vector template. But I couldn't use the template <typename U> member templates approach because I have other ctor's with 2 parameters and the wrong one was getting used. ie: i have a ctor: Vector( Point from, Point to){} when I write Vector v(Point(...), Point(...) ) "it" would try to construct v using template <typename U> Vector( U x, U y ){...} I've essentially given up for now and resorted to runtime check using BOOST_ASSERT. Thanks for the assistance Frank