Re: [boost] [fusion] segmented sequences and algorithms

From: Eric Niebler (eric_at_[hidden])
Date: 2006-10-06 01:04:54

Chris Weed wrote:
 > On 10/5/06, Eric Niebler <eric_at_[hidden]> wrote:
 >> The idea of segmented fusion sequences and algorithms has been discussed
 >> here several times, and Joel has made some reference to some earlier
 >> work I did in this area. I had done some tests at the time that
 >> suggested that a segmented sequences and algorithms could significantly
 >> outperform nonsegmented variants Fusion currently uses. Per Joel's
 >> suggestion, I went ahead and checked my code into CVS HEAD. All
 >> segmented-specific code is quarantined in separate ext_ directories.
 >>

<snip>

> Hi,
> This sounds cool. These seems similar to having iteration on rows of an image.
> Is it possible to iterate from segment to segment at the same position
> of each segment.
> Chris
> 

Not in general. Not all the segments of a sequence necessarily have the 
same number of elements. Some, in fact, may be empty.

-- 
Eric Niebler
Boost Consulting
www.boost-consulting.com