[LON-CAPA-users] Choosing m elements out of n in an array

[H. K. Ng]

On Sun, 27 Feb 2005 14:37:28 +0200 "Guy Ashkenazi" wrote:

> >> Question for Guy - is there a difference between using
> >> &random_permutation() and &map() ?
> >
> > Nope.
> 
> I just looked at the documentation of &map, where it says to use @Z = 
> &map($seed,\@a)
> Is the backslash before @a necessary? &random_permutation doesn't need 
> that.

Yes, it is necessary for &map. You can also call 

&map($seed,\@a,\@returned_array);

That is the old capa way.
hk