On Thu, 10 Aug 2006 20:19:10 +0200, Don Clugston wrote:


> Have you read Norbert Nemec's original multi-dim array proposal (you can find it on Wiki4D)? The key feature is "strided slices", which seem to be essential for dealing with multi-dim arrays. Something like that could get most of the fruit on the tree... Norbert's idea is not quite well developed enough yet, though, to be truly compelling. I think Walter isn't interested in being as good or better than C/C++/C#, he wants to Get It Right. If you can develop an idea for strided arrays which folds neatly into the existing language, that would be extremely valuable.
> 

Walters comment to Nemec's proposal where that it where 2.0 stuff.

So, I think the 2.0 series will contain extended arrays stuff and vectorization stuff. http://all-technology.com/eigenpolls/dwishlist/index.php?it=10

Dave wrote:
> Oskar Linde wrote:
>> Mikola Lysenko wrote:
>>
>>> 5.  How do slices work?
>>>
>>> You can't just slice a random chunk from the middle of an array in place
>>> like a regular array, since the layout will be incorrect.  
>>
>> Yes you can. This is exactly what strides are for.
>> For each dimension, you keep a stride as well as a length. Walking up the
>> dimension moves a stride of units of memory. This even allows things like
>> transposing a large matrix without moving a single byte.
> 
> Can you pass along some syntax / usage for that?
> 
> Thanks.
> 
>> /Oskar
>>
>>
I think he was talking about Norbert Nemec's proposal, which was referred to earlier:

http://homepages.uni-regensburg.de/~nen10015/documents/D-multidimarray.html

Cheers,

Reiner