Feature Request: Support for `ReadOnlyMemory<T>` and `ReadOnlySpan<T>` in Vector Creation about mathnet-numerics HOT 2 OPEN

Hi, this sounds like a valid und useful request. Would you mind sending a PR for it so I can have a detailed look on how you envision its concrete usage?

from mathnet-numerics.

After reviewing the source code, I've determined that significant modifications would be necessary to implement this feature effectively.

Accepting Memory or Span would only be advantageous if used for all internal mathematical operations. However, the current implementation of Vector<T> and Matrix<T> relies heavily on memory being stored in arrays. Changing this would require substantial modifications to all helper methods in ILinearAlgebraProvider, among others. Such changes would constitute a massive breaking change, as much of the public API would be altered.

To implement this feature, it would be necessary to first refactor the code to internally utilize ReadOnlySpan<T> and Span<T>, similar to what is done in the new System.Numerics.Tensors.TensorPrimitives.

Subsequently, we could refactor VectorStorage<T> and similar components to work with Memory<T>. Only after these steps could we introduce new Build.DenseOf... methods.

The benefits from a performance and memory efficiency standpoint would be enormous.

from mathnet-numerics.