Rectangular multidimensional arrays for D

[uri via Digitalmars-d]

On Tuesday, 23 December 2014 at 03:11:20 UTC, Laeeth Isharc wrote:
> On Monday, 22 December 2014 at 22:46:57 UTC, aldanor wrote:
>> On Monday, 22 December 2014 at 22:36:16 UTC, H. S. Teoh via 
>> Digitalmars-d wrote:
>>> FYI, Kenji's merge has since been merged. So now the stage is 
>>> set for
>>> somebody to step up and write a nice multidimensional array
>>> implementation.
>>
>> One important thing to wish for, in my opinion, is that the 
>> design of such implementation would allow for (future 
>> potential) integration with linear algebra libraries like 
>> blas/lapack without having to be rewritten from scratch (e.g. 
>> so it doesn't end up like Python's array module which got 
>> completely superceded by numpy).
>
> You mean especially for sparse matrices ?  What is it that 
> needs to be borne in mind for regular matrices ?

The layout in lapck/blas is column major so it can be handy using 
a wrapper around arrays to provide the FORTRAN indexing.

Also you need to pass the .ptr property of the array or &a[0]. D 
arrays are fat and include their length.

Cheers,
uri