Re: [boost] [MPL] Several Questions

From: David A. Greene (greened_at_[hidden])
Date: 2002-11-25 16:23:46

Aleksey Gurtovoy wrote:

>>Ok, but what if I don't want to alter first, second and third?
>>That is, I have some set of classes that define types like this
>>but they were never originally intended to represent a sequence.
>>It just happens that I want to maipulate a set of these types
>>formed by the typedef members they define.  
> 
> Is the sequence always the same? E.g. do you always operate on 'first',
> 'second', and 'third', or sometimes it's 'second' and 'third' only, or even
> the 'third' only?
> 
> If the former, then you only need to specialize 'begin/end' for the 'first'
> type, and you are done:

 > If not, then wrapping it into 'intrusive_list' is probably the best 
we > can do:

I do need to be able to start at various points within the sequence.
Your second solution fleshes out the design I had in mind, but I
was out of town over the weekend so you beat me to the punch.  :)

Thanks again, I am really loving MPL!

                           -Dave

-- 
"Some little people have music in them, but Fats, he was all music,
  and you know how big he was."  --  James P. Johnson