Re: Bizarre semantic of Mat

On Wed Jan 17th 2024 at 03:37, Ilya Zakharevich wrote:

> Today I (finally) looked through the documentation of Mat() — and it
> seems to be very convenient for interactive usage!  On the other hand,
> such “cute” semantics have a tendency to become a limiting factor when
> one wants to write down general-purpose algorithms…
>
> Is there a simple way to convert a vector-column into a 1 column
> matrix (without using matrix())?  Mat() is almost there — except for
> bizarre special-cases — which are impossible to switch off!
>

     I confess I use the bizarre special-cases all the time...

     Anyway, if you have a column C and want a 1-column matrix,
  with C as only colon you can make Mat(vector(1,n,C)) (yes, I know,
  this is anti-intuitive, long, non-convenient, not explicitly documented,
  needed only because of bizarre semantics and uber-dirty).

    Same for row R: Mat(vectorv(1,n,R)) (same remarks).

         Loïc