[Boost-users] a few boost.View questions

From: abir basak (abirbasak_at_[hidden])
Date: 2007-05-10 02:44:31

When I was searching for a view library to have some container adapters 
so that I can store a portion of a dynamic container in a class, I came 
across Boost View library and uBLAS range_vector and slice_vector.
(Iterators are unsuitable for my purpose as I can't store a portion of a 
container through iterator when container are resizing (through 
push_back & pop_front) , and also iterators are dumb enough so they dont 
give the index for the container they are locating :( )
So I needed the alternative view classes or container adapters , which 
are store-able even when container is allocating/reallocating as long as 
   the portion of the container which the view is pointing is available.
At present I have my own view classes (only the classes I need ) , but 
planning to switch to boost View classes.

A few questions regarding boost View library (from sandbox)
1) is it an accepted library ? if not when it will be accepted ?
2) Apart from range_view all other views are based on container (i.e 
they are container adapter ). So all other views are store-able while 
range view is not ( when the iterator becomes invalid , the view is 
also) any reason for this decision ?
3) for step_iterator, why no step_view is given ?
3) How can I make a composite view mixing a set of views like 2 range 
view, or one range_view and one permutation_view. For eg. I want to make 
a container adapter for a container taking a range 2-10 (range_view) and 
15,18,17 (permutation_view ). AFAIK some of this mixed views are 
supported by blitz library.

Thanks
abir
-- 
Abir Basak, Member IEEE
Software Engineer, Read Ink Technologies
B. Tech, IIT Kharagpur
email: abir_at_[hidden]
homepage: www.abirbasak.com