Re: [Boost-users] [multi_array] Access a view's index_range

Subject: Re: [Boost-users] [multi_array] Access a view's index_range
From: Robert Jones (robertgbjones_at_[hidden])
Date: 2008-10-09 16:36:40

On Thu, Oct 9, 2008 at 5:23 PM, Steven Watanabe <watanabesj_at_[hidden]>wrote:

> AMDG
>
>
> Robert Jones wrote:
>
>> How do I access the index_range of an array_view? ie.,
>>
>> typedef boost::multi_array<Cell,2 > Grid;
>> Grid grid( boost::extents[9][9]);
>> Grid::array_view<2> view = grid[indices[range(), range()]];
>>
>> for (Grid::index i = view.?????.start(); i != view.?????.finish(); ++i)
>> {....}
>>
>> where I'm expecting i to take values 0..8 inclusive.
>>
>
> Your code seems to have gotten a bit mangled.
> Can you post a small compilable example?
>
>
I would if I could, but getting it to compile is exactly my problem! I
don't understand what I need to write for the "?????" bits.

The reference guide for multi_array describes a start() and finish()
methods on the index_range type, but I can't see how to get a
populated object of type index_range from a multi_array or from
a multi_array_view.

Thanks

- Rob.