[Jprogramming] insert item

[Raul Miller]

On 8/23/07, Raul Miller <rauldmiller at gmail.com> wrote:
> > ins=:1 :0
> > :
> >  b=.1#~1 j.m e.~i.#y
> >  x (I.-.b)} b expand y
> > )

Brian Schott pointed out to me that this (and my variant ins1) assume
that m is in ascending order (which I was assuming, since I don't
normally do this kind of thing with indices but with bit masks).

Here's a version which corrects this problem:

ins=:1 :0
:
 b=.1#~1 j.m e.~i.#y
 (x/:m) (I.-.b)} b expand y
)

Thanks,

-- 
Raul