Looking a little at Kmath, how am I supposed to use the

LinearSpace

like

EjmlLinearSpaceFSCC

. More exactly the extension-functions like

Matrix<Float>.toEjml()

I've tried to use the

with (EjmlLinearSpaceFSCC) { code... }

syntax but it doesn't work. Not sure how else I'd get those to work?

This extension is mostly for inner use. It is used under the hood for converting external matrices to EJML. basically

with (EjmlLinearSpaceFSCC) { code... }

should work. Could you explain what is the problem?

I'm currently doing a very simple example (which I have the code for in Ejml, but wanted to try Kmath as it seems interesting). This is the current code failing:

Let me try it, I have not tried it since @Iaroslav Postovalov introduced codegen.

@altavir my bad... I had

<T>

Ah, OK. Then it should not work. Basically, you do not need to call

toEjml

because it is converted automatically under the hood. Just do the operations you need

That's good to know! 🙂 If I wish to find all distinct values in a `Matrix`I must either use

rows

or

elements

where both has

PerformancePitfall

Is there another recommended way to fetch elements? Simply a for-loop?

The rows does for-loop. So it should be OK for you. But it is in general depends on implementation. Elements is more time-consuming since it creates an index-element pair on each step. So it is not a good idea to use it in performance-critical code. The warning does not necessary mean that it is slow, it means that you should probably check it.

Yes, the code made that clear (awesome!) - that's why I wanted to validate 😄 Thank you!