[Jprogramming] table challenge in simple J

[Raul Miller]

Brian Schott reminds me that I should have tested.

Make that:
  a ([ by ] over +/) f. b

[ by ] cannot be simplified, here, because ] supplies the argument to over.

-- 
Raul

On Mon, Nov 14, 2011 at 9:33 AM, Raul Miller <rauldmiller at gmail.com> wrote:
> Oh, nvm, I see:
>
>  a (by over +/) f. b
>
> --
> Raul
>
> On Mon, Nov 14, 2011 at 9:19 AM, Raul Miller <rauldmiller at gmail.com> wrote:
>> Which conditions are not satisfied?
>>
>> --
>> Raul
>>
>> On Mon, Nov 14, 2011 at 8:52 AM, Linda Alvord <lindaalvord at verizon.net> wrote:
>>> This does not satisfy the  conditions of the problem.  Also, wait until November 18th for more hints.  Thanks.
>>>
>>> Linda
>>>
>>>
>>> -----Original Message-----
>>> From: programming-bounces at jsoftware.com [mailto:programming-bounces at jsoftware.com] On Behalf Of Raul Miller
>>> Sent: Monday, November 14, 2011 7:41 AM
>>> To: Programming forum
>>> Subject: Re: [Jprogramming] table challenge in simple J
>>>
>>>   over=:[: ({.;}.) [: ": ,
>>>   by=: (' ' ; [: ,. [),.]
>>>
>>> --
>>> Raul
>>>
>>> 2011/11/13 Linda Alvord <lindaalvord at verizon.net>:
>>>> In the dictionary in the section on "Verbs and Adverbs" there are two
>>>> definitions designed to produce a table:
>>>>
>>>>
>>>>
>>>>       over=:({.;}.)@":@,
>>>>
>>>>       by=:' '&;@,.@[,.]
>>>>
>>>>      a=: 2 3 5
>>>>
>>>>      b=: 0 1 2 3
>>>>
>>>>    a by b over a +/ b
>>>>
>>>> --T-------┐
>>>>
>>>> │ │0 1 2 3│
>>>>
>>>> +-+-------+
>>>>
>>>> │2│2 3 4 5│
>>>>
>>>> │3│3 4 5 6│
>>>>
>>>> │5│5 6 7 8│
>>>>
>>>> L-+--------
>>>>
>>>>
>>>>
>>>> Here is the challenge.  Use the arguments a and b and define a single tacit
>>>> function in "simple J" that does not use  @  and provides the same result.
>>>>
>>>>
>>>>
>>>>    a table b
>>>>
>>>> --T-------┐
>>>> │ │0 1 2 3│
>>>> +-+-------+
>>>> │2│2 3 4 5│
>>>> │3│3 4 5 6│
>>>> │4│4 5 6 7│
>>>> L-+--------
>>>>
>>>>
>>>>
>>>> To give a little time for thought, do not post a solution until November
>>>> 18th. I'll post mine then too.
>>>>
>>>>
>>>>
>>>> Linda
>>>>
>>>> ----------------------------------------------------------------------
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>>> ----------------------------------------------------------------------
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>>>
>>> ----------------------------------------------------------------------
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>>
>