Designing a matrix library for D

[bearophile via Digitalmars-d]

H. S. Teoh:

> Operations like intersections, subarrays, etc., should be done
> via wrapper types

A Region is not an array of data, it's more like a 
[(x1,x2),(y1,y2)]. You can allocate an array given a Region, you 
can iterate a Region, etc.


>> A.distribution ::= distribution of array A
>
> What's a "distribution"?

It's a concept of higher level compared to Regions. It's less 
efficient than Regions, but it's more flexible. It allows to 
decouple the Point from the location of the data memory. So you 
can have a distribution that maps Points to various different 
concrete arrays.

http://x10.sourceforge.net/x10doc/2.2.1/x10/array/DistArray.html
http://x10.sourceforge.net/x10doc/2.2.1/x10/array/Dist.html

I have not fully understood what a Distribution is.

Bye,
bearophile