Row-wise matrix creationSource:
Create matrices laying out the data in rows, similar to
matrix(..., byrow = TRUE), with a nicer-to-read syntax.
This is useful for small matrices, e.g. covariance matrices, where readability
is important. The syntax is inspired by
See quasiquotation for more details on tidy dots semantics,
i.e. exactly how the
... argument is processed.