Freudian slip, I meant the J object :-) > On 19 May 2020, at 10:18 pm, 'Rob Hodgkinson' via Programming > <[email protected]> wrote: > > Yes Harvey, it works along the leading axis of the APL object… easy to > sample/test… > > 1 0 1 # 1 2 3 > 1 3 > > 1 0 1#i.3 2 > 0 1 > 4 5 > > 1 0 1# i.3 4 5 > 0 1 2 3 4 > 5 6 7 8 9 > 10 11 12 13 14 > 15 16 17 18 19 > > 40 41 42 43 44 > 45 46 47 48 49 > 50 51 52 53 54 > 55 56 57 58 59 > > 1 0 1#'one';'two';'three' > ┌───┬─────┐ > │one│three│ > └───┴─────┘ > > …/Regards Rob > >> On 19 May 2020, at 9:55 pm, 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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