Use copy (#) or from ({)
tst
┌──────┬──────┐
│May 08│May 07│
├──────┼──────┤
│2020 │2020 │
├──────┼──────┤
│664.35│652.35│
├──────┼──────┤
│660.21│653.00│
├──────┼──────┤
│664.56│657.12│
├──────┼──────┤
│657.67│651.29│
├──────┼──────┤
│- │- │
├──────┼──────┤
│1.84% │1.19% │
└──────┴──────┘
0 0 1 1 1 1 1 0#tst
┌──────┬──────┐
│664.35│652.35│
├──────┼──────┤
│660.21│653.00│
├──────┼──────┤
│664.56│657.12│
├──────┼──────┤
│657.67│651.29│
├──────┼──────┤
│- │- │
└──────┴──────┘
or
2 3 4 5 6{tst
┌──────┬──────┐
│664.35│652.35│
├──────┼──────┤
│660.21│653.00│
├──────┼──────┤
│664.56│657.12│
├──────┼──────┤
│657.67│651.29│
├──────┼──────┤
│- │- │
└──────┴──────┘
Skip Cave
On Tue, May 19, 2020 at 8:36 AM Michael Dykman <[email protected]> wrote:
> I have also found {:: to be very useful and under appreciated.
>
>
>
>
> On Tue, May 19, 2020, 07:56 HH PackRat <[email protected]> wrote:
>
> > On 5/19/20, Michael Dykman <[email protected]> wrote:
> > > In functional languages, you don't really delete so much as you make a
> > > fresh copy absent of the undesirable elements.
> > > Where you looking for this?
> > >
> > > ] a=. <"0 'abcdef'
> > > ┌─┬─┬─┬─┬─┬─┐
> > > │a│b│c│d│e│f│
> > > └─┴─┴─┴─┴─┴─┘
> > > 0 0 1 1 0 1 # a
> > > ┌─┬─┬─┐
> > > │c│d│f│
> > > └─┴─┴─┘
> >
> > That kind of thing is what gave me the idea of a boolean mask of some
> > type. However, can this be carried over, applying to rows of a table
> > instead? I'm thinking that it probably does in some way, but I want
> > confirmation on that. Thanks for your response!
> >
> > Harvey
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> >
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
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