🚀 go-pugleaf

In article <48cekf$6ns@unidoct.Chemietechnik.Uni-Dortmund.DE>,
Thomas Arend <arend@Chemietechnik.Uni-Dortmund.DE> wrote:

|> I have some problems with the instatiation of templates,
|> especially partial instatiation, under g++ 2.7.0.

As Jason Merrill said, no compilers currently support partial
specialisation.

|> For some special values of T_size I need a special
|> behaviour, so I would like to overload 'x'. In this context
|> the datatype 'T' is not of interest.

I think you want something like this:

  template<typename T> class A<T,N> { };

Where 'N' is your 'special value' of T_size. This partial specialisation
would then be used whenever an instantiation is required for T_size == N
with whatever type is specified for T.

Some more examples of the syntax:

  template<typename T, typename U> class X { }; // primary template

  template<typename T> class X<T,T> { };
    // partial specialisation for when both args are the same

  template<typename T, typename U, typename V, typename W>
    class X<T U::*, V W::*> { };
    // partial specialisation for two pointers to members

  template<typename T, typename U> class X<T*,U*> { };
    // partial specialisation for two pointer types

BTW, Thomas, your return email address does not work -- I tried to contact
you by email about this!





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