Applying each element of a vector to each row of a matrix

[Jordi Gutiérrez Hermoso]

I'm often found with a situation in which I have some matrix A and
some vector v and I would like to do something like multiply each
column or row in A by each element of v. I've wished that something
like A.*v or v.*A would do this if the row or column dimensions of A
matched those of v, but of course this doesn't work. I end up
resorting to repmat instead to turn v into a matrix whose dimensions
match those of A.

My questions are, is there another way to do this more cleanly without
first calling repmat? If there isn't, would this be a reasonable
extension of the elementwise operators?

Thanks in advance,
- Jordi G. H.