Hello,
I want to write a non-template class with a constructor template member.
The constructor shall not take arguments. Is this possible at all?
Here the concrete example: A class which contains three vectors. There
are several different methods to initialize these vectors(size and
contents). These methods are the template parameter I want to use.
enum Method {A, B, C, D, E, F};
class Butcher
{
public:
template <Method m>
Butcher();
private:
Vector a, b, c;
};
template <>
Butcher::Butche r<A>()
: a(2), b(4), c(2)
{
a = 0.5, 1;
b = -1, 1, 3, 2;
c = 0, 1;
}
....
I do not want to call a template function from a normal constructor because
I would have to allocate the vectors twice. Is there a way. I think the
trouble is that constructors are unnamed and I have no argument, from which
the template parameter value can be derived.
regards,
alex 2 5006
On Wed, 01 Dec 2004 11:39:47 +0100, Alexander Stippler
<st**@mathemati k.uni-ulm.de> wrote: Hello,
I want to write a non-template class with a constructor template member. The constructor shall not take arguments. Is this possible at all?
No. A workaround is to add a dummy argument of the type
template <Method m>
class MethodWrapper{} ;
or similar to the constructor.
Tom
On Wed, 01 Dec 2004 13:21:03 +0000, Tom Widmer
<to********@hot mail.com> wrote: On Wed, 01 Dec 2004 11:39:47 +0100, Alexander Stippler <st**@mathemat ik.uni-ulm.de> wrote:
Hello,
I want to write a non-template class with a constructor template member. The constructor shall not take arguments. Is this possible at all?
No. A workaround is to add a dummy argument of the type
template <Method m> class MethodWrapper{} ;
or similar to the constructor.
Or you could create a templated factory function instead of templating
the constructor.
Tom This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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