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
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