Hi,

 I'm working on a template library for Image processing, and I'd like to
cast from one template instance to another using the casting operator .

 That is, is it possible to cast from Test<int> to Test<float>
automaticly,
from within the template, without explicitly specifing the type?
(Of course assumuing that such automatic casting exist, which in my case
is true).


Thanx, Adi


Note:
  I tryed using (as someone suggested):

template<class T>
class Test
{
public:
     Test() {}
     ...
     template<class U>
     operator Test<U>() { ...; return Test<U>(...); }
}

but it wouldn't compile on MSVC++ 4.0.
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Adi Shavit <adish@cs.huji.ac.il> writes:

>  I tryed using (as someone suggested):
>
>template<class T>
>class Test
>{
>public:
>     Test() {}
>     ...
>     template<class U>
>     operator Test<U>() { ...; return Test<U>(...); }
>}
>
>but it wouldn't compile on MSVC++ 4.0.

I'm pretty sure that template conversion operators such as this are
allowed by the C++ committee's draft working paper.  However, member
templates are a pretty new feature and most compilers don't support
them yet.

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