Re: [boost] [serialization] Inherited objects

From: David Abrahams (dave_at_[hidden])
Date: 2005-10-11 17:22:28

Simon Buchan <simon_at_[hidden]> writes:

>> Nope, wrong again.  If ar's type X is dependent and "register_type" is a
>> nested template in X, then you need "ar.template register_type<...>".
>> Otherwise, you need "ar.register_type<...>"
>> 
> A-la typename usage:
>
> 	typename dependant_name::nested_type
>
> 	dependant_name.template nested_template

Exactemundo.

>>>From the above code it could be either.  Its really annoying to me
>>>to have to keep the context and provinence of a variable like "ar"
>>>in my head while I'm writting.  
>> 
>> Guess what; you don't.  If you had to know whether ar was a template
>> or not, just think how impossible it would be to write generic code?
>> 
> Well, you *do* have to know if ar is a class template, but not if it's a 
> template class, which is what I think you were trying to say.

No, I was using colloquialism.  After all, "ar" is a variable, not a
type or a template.  The only interpretation that could possibly make
sense is that I meant "ar's type is a class template specialization."

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com