[Jprogramming] domain error

[Terrence Brannon]

On 5/20/07, John Randall <randall at andromeda.rutgers.edu> wrote:
> Terrence Brannon wrote:
> > Hello J fans,
> >
> > I am trying to implement this benchmark:
> > http://shootout.alioth.debian.org/gp4/benchmark.php?test=spectralnorm&lang=all
> >
>
> Following the C# program, if you really want to write separate functions,
> you want something like
>
> mp=:+/ .*

I do not understand the . * part of the expression +/ . *
Could you give some examples/ explanation of that? "Learning J" went
over it, but  I can never find things in that bookafter I read it...
my bad I suppose.