Do we need Mat, Vec, TMmat, Diag, Sym and other matrix types?

[9il]

On Wednesday, 14 March 2018 at 05:40:42 UTC, Manu wrote:
> I'd like to understand why implement a distinct vector type, 
> rather
> than just a Nx1/1xN matrix?

This is just and API quesiton of how elements of Nx1/1xN matrix 
should be accessed.
E.g. should one specify one or two arguments to access an element

> That kinds sounds like a hassle to me... although there is 
> already
> precedent for it, in that a scalar is distinct from a 1x1 
> matrix (or a
> 1-length vector).

Yes, I have the same thoughts. The very high level of API 
abstraction may looks no good for end users.

> I want to talk to you about how we interact with colours 
> better... since in that world, a matrix can't just be a grid of 
> independent storage cells. That will throw some spanners into 
> the works, and I'd like to think that designs will support a 
> classy way of expressing images as matrices of pixel data.

Just have replied to your letter.

Thanks,
Ilya