Re: [boost] [variant, MPL] Is there a variant -> mpl sequence metafunction ?

From: David Abrahams (dave_at_[hidden])
Date: 2006-11-13 10:10:16

Joel de Guzman <joel_at_[hidden]> writes:

> Jaakko Järvi wrote:
>> 
>> On May 17, 2005, at 10:22 PM, Larry Evans wrote:
>> 
>>> On 05/17/2005 10:07 PM, Jaakko Järvi wrote:
>
> [...]
>
>>> I'd suggest making variant part of mpl.  With that, the problem
>>> disappears.
>> 
>> Yes, variant, mpl, tuple (or fusion), should play well together.
>> A good first step would be to start using the same type to mark that
>> no type was specified (instead of the variations void_, null_t, ...).
>
> FYI, variant is now a valid fusion sequence. 

I don't get it.  What are the values of the non-stored elements?

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