There's two ways of accomplishing what I think you are asking for.
(1) Modify the J interpreter, or
(2) Modify the J IDE.
You could modify the interpreter such that large integers are treated
as extended integers. (This might be a worthwhile change at some point
in the future. The reasoning here would be that if the user has typed
in all those digits, presumably they are significant.)
You could modify the J IDE (to automatically add the trailing 'x' on
long sequences of digits followed by a space). This would be
considerably less desirable (since it could mess up literal text).
The remaining option is to hit that 'x' key, yourself.
I hope this makes sense,
--
Raul
On Mon, Aug 14, 2023 at 4:43 PM Ak O <akin...@gmail.com> wrote:
>
> Hi Raul,
>
> Yes I think I understood Henry's message. This why my thought is to simulte
> the keyboard input. Since typing the raw input into the first function
> works exactly as desired. I want rather to substitute escaping to the
> keyboard for feeding the input as keystrokes.
>
> I don't know enough about stdin and keyboard reads to know the different
> triggers.
>
> Are there some bytes that the keyboard triggers that
> interpreter recognizes?
>
> If the analogy is writing/reading a file, can i get the bytes of each digit
> and go from there?
>
> Is there better was for me to think about this? Probably.
> But, I know that if a keyboard can do it, I can simulate a keyboard doing
> it.
>
> I must be able to run that track without needing to escape the function.
>
>
> :)
>
> Ak
>
>
>
> On Mon., Aug. 14, 2023, 13:30 Raul Miller, <rauldmil...@gmail.com> wrote:
>
> > I think you should re-read Henry's message that you were responding to
> > here.
> >
> > By the time any J function can run, it's already too late.
> >
> > --
> > Raul
> >
> > On Mon, Aug 14, 2023 at 12:58 PM Ak O <akin...@gmail.com> wrote:
> > >
> > > What expression allows a function to recieve an argument 'y' as a literal
> > > without using quotes?
> > >
> > > Below are two deficient functions.
> > > The size of the vector is given by 'x'. The permutation
> > > index is meant to be given by 'y'.
> > >
> > > My intention is treat 'y' as a literal, without needing to use quotes on
> > > the input.
> > >
> > > This first function works by escaping to the keyboard for input
> > > I would like rather for the function to receive the input from the raw
> > > argument and not have to escape to the keyboard.
> > >
> > > Desired Input
> > > 30 extd 180548043269214561950911457875657
> > > Rather than
> > > 30 extd '180548043269214561950911457875657'
> > >
> > >
> > > This function is deficient by its operating sequence.
> > > It escapes to keyboard, which preservs the literal type.
> > >
> > > extd =: 4 : 0
> > > n=. ((1!:1) 1
> > > ((".@,&'x' n)) A. i. x
> > > )
> > >
> > > 30 extd 180548043269214561950911457875657
> > >
> > > Keyboard input (if this approach makes sense, can the keyboard input be
> > > simulated by using y as the feed?)
> > > 180548043269214561950911457875657
> > >
> > > Result
> > > 20 12 4 29 7 17 22 11 2 27 28 23 6 21 9 3 24 10 26 13 15 1 18 8 25 19 0 5
> > > 16 14
> > >
> > >
> > >
> > > Alternative deficient function by the input form.
> > > Yields the correct result but uses quotes in the input.
> > >
> > > extdquotes =: 4 : 0
> > > ((".@,&'x' n)) A. i. x
> > > )
> > >
> > > 30 extdquotes '180548043269214561950911457875657'
> > >
> > > Result
> > > 20 12 4 29 7 17 22 11 2 27 28 23 6 21 9 3 24 10 26 13 15 1 18 8 25 19 0 5
> > > 16 14
> > >
> > >
> > > I am looking for the function that uses the input for extd that delivers
> > > the result of extdquotes
> > >
> > >
> > > Thank you for your help
> > > Ak
> > >
> > >
> > > On Sat., Aug. 12, 2023, 13:43 Henry Rich, <henryhr...@gmail.com> wrote:
> > >
> > > > It's like this:
> > > >
> > > > /long-number/ is a single word. If the length is <19 digits, it is an
> > > > integer, otherwise a float (which necessarily has only 16 digits of
> > > > precision).
> > > >
> > > > /long-number/x is a single word, but it is always an extended integer,
> > > > and every digit of /long-number/ is preserved.
> > > >
> > > > x: /number/ is two words. /number/ is evaluated first, and then x: is
> > > > applied to its value to give an extended integer.
> > > >
> > > > In that last case, if /number/ has more than 19 digits, it will have
> > > > been represented as a float, and the extended integer will have only 16
> > > > digits of precision.
> > > >
> > > > Henry Rich
> > > >
> > > > On 8/12/2023 3:25 PM, Ak O wrote:
> > > > > My thought was that 'x' must always be extended by definition.
> > > > >
> > > > > I was trying to think what cases this operator's 'x' argument would
> > not
> > > > be
> > > > > strictly extended.
> > > > >
> > > > > Chris demonstrated that the input 'x' in my example is float by
> > > > > construction.
> > > > >
> > > > > Raul explained that the parser treats the number before it treats
> > the
> > > > > operator ( if I have understood his message correctly).
> > > > >
> > > > > So if I have understood all of this correctly. As a raw input, it is
> > the
> > > > > extended representation of the float input 'x' that is actually what
> > is
> > > > > being operated on by A. to yield the result.
> > > > >
> > > > >
> > > > >
> > > > > Ak
> > > > >
> > > > >
> > > > > On Sat., Aug. 12, 2023, 11:34 Henry Rich, <henryhr...@gmail.com>
> > wrote:
> > > > >
> > > > >> I misunderstood your question.
> > > > >>
> > > > >> (x A. y) starts by verifying that (*./ (|x) < !.#y) and then
> > converts x
> > > > >> to a permutation with
> > > > >> (i.@-&.<: y) #: x
> > > > >> (all in extended precision if x is extended), followed by a number
> > of
> > > > >> rotations within an index vector. It is much less work to start
> > with
> > > > >> the permutation vector rather than the anagram index.
> > > > >>
> > > > >> Henry Rich
> > > > >>
> > > > >> On 8/11/2023 8:29 PM, Ak O wrote:
> > > > >>> For me,
> > > > >>> (x: y)
> > > > >>> does not preserve the input.
> > > > >>>
> > > > >>> The result I get is not the same.
> > > > >>>
> > > > >>>
> > > > >>> ( x:180548043269214561950911457875657 )
> > > > >>> 180548043269214573494164592263168
> > > > >>> This does not work.
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>> 180548043269214561950911457875657x
> > > > >>> 180548043269214561950911457875657
> > > > >>> This does work.
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>>
> > > > >>> On Fri., Aug. 11, 2023, 13:01 Henry Rich, <henryhr...@gmail.com>
> > > > wrote:
> > > > >>>
> > > > >>>> (x: value) produces extended version of value.
> > > > >>>>
> > > > >>>> Henry Rich
> > > > >>>>
> > > > >>>> On Fri, Aug 11, 2023, 2:44 PM Ak O <akin...@gmail.com> wrote:
> > > > >>>>
> > > > >>>>> Hi everybody, I hope you are all well.
> > > > >>>>>
> > > > >>>>> I have a question about the Anagram ( A. ) operator.
> > > > >>>>>
> > > > >>>>> In a defined function, how do I designate that an input 'x' is
> > > > >> treatment
> > > > >>>>> as extended datatype rather than float?
> > > > >>>>>
> > > > >>>>> Where being defined:
> > > > >>>>> 13 : ' x A. i.y'
> > > > >>>>> [ A. [: i. ]
> > > > >>>>>
> > > > >>>>> is to be taken as,
> > > > >>>>> 13 : 'X_INPUTx A. y' NB. 12345672345467x A. i.y
> > > > >>>>>
> > > > >>>>> How do I get the affect of catenating an 'x' to the end of a
> > number
> > > > in
> > > > >> a
> > > > >>>>> defined function?
> > > > >>>>>
> > > > >>>>> If you understand my question ignore below, otherwise I give an
> > > > >> example.
> > > > >>>>> Thank you for your thoughts.
> > > > >>>>>
> > > > >>>>> Ak
> > > > >>>>>
> > > > >>>>>
> > > > >>>>> My understanding of the Anagram operator (A.).
> > > > >>>>> The vocabulary reference page (acapdot) gives the product of the
> > > > >> Anagram
> > > > >>>>> index function
> > > > >>>>> A. y
> > > > >>>>> as datatype extended.
> > > > >>>>>
> > > > >>>>>
> > > > >>>>> The Anagram function
> > > > >>>>> x A. y
> > > > >>>>> applies the permutation map (x) on ordered vector sequence (y)
> > as
> > > > >> below.
> > > > >>>>>
> > > > >>>>> ] vector_sequence =: ?~30
> > > > >>>>> 20 12 4 29 7 17 22 11 2 27 28 23 6 21 9 3 24 10 26 13 15 1 18 8
> > 25 19
> > > > >> 0 5
> > > > >>>>> 16 14
> > > > >>>>>
> > > > >>>>>
> > > > >>>>> ] vector_anagram =: A. vector_sequence
> > > > >>>>> 180548043269214561950911457875657
> > > > >>>>>
> > > > >>>>> The Noun, vector_anagram will have datatype extended, given by:
> > > > >>>>> datatype vector_anagram
> > > > >>>>> extended
> > > > >>>>>
> > > > >>>>> Applying the vector_anagram on a vector using the command:
> > > > >>>>> vector_anagram A. i.30
> > > > >>>>> 20 12 4 29 7 17 22 11 2 27 28 23 6 21 9 3 24 10 26 13 15 1 18 8
> > 25 19
> > > > >> 0 5
> > > > >>>>> 16 14
> > > > >>>>>
> > > > >>>>> The expected result.
> > > > >>>>>
> > > > >>>>> In a case where the digits are input on there own, the following
> > > > fails
> > > > >>>> with
> > > > >>>>> 'domain error, executing dyad A.'
> > > > >>>>>
> > > > >>>>> 180548043269214561950911457875657 A. i.30
> > > > >>>>>
> > > > >>>>> One approach is to place 'x:' before the input.
> > > > >>>>> ( x:180548043269214561950911457875657 )A. i.30
> > > > >>>>> 20 12 4 29 7 17 22 11 2 27 28 25 1 8 0 15 16 14 3 5 19 26 18 6
> > 21 23
> > > > 13
> > > > >>>> 24
> > > > >>>>> 9 10
> > > > >>>>>
> > > > >>>>> This is not the expected result.
> > > > >>>>>
> > > > >>>>> The input is treated as 180548043269214573494164592263168.
> > > > >>>>>
> > > > >>>>> ( x:180548043269214561950911457875657 )
> > > > >>>>> 180548043269214573494164592263168
> > > > >>>>>
> > > > >>>>> Not the input I thought I was applying.
> > > > >>>>>
> > > > >>>>> An alternative is to postfix an 'x' to the end of the input.
> > > > >>>>> 180548043269214561950911457875657x A. i.30
> > > > >>>>> 20 12 4 29 7 17 22 11 2 27 28 23 6 21 9 3 24 10 26 13 15 1 18 8
> > 25 19
> > > > >> 0 5
> > > > >>>>> 16 14
> > > > >>>>>
> > > > >>>>> The expected result. But how do I achieve this for a defined
> > > > function.
> > > > >>>>>
> > > > >>>>> Does not work either.
> > > > >>>>> ".@((":vector_anagram),x')"_ NB. same as x:
> > > > >>>>>
> > > > >>>>>
> > > > >>>>> Maybe there is a symbol that 13 : can be recognize to trigger the
> > > > >>>> extended
> > > > >>>>> datatype.
> > > > >>>>>
> > > > >>>>>
> > > > >>>>>
> > > > >>>>> Thank you for your help.
> > > > >>>>>
> > > > >>>>> Ak
> > > > >>>>>
> > > > ----------------------------------------------------------------------
> > > > >>>>> For information about J forums see
> > > > http://www.jsoftware.com/forums.htm
> > > > >>>>>
> > > > >>>>
> > ----------------------------------------------------------------------
> > > > >>>> For information about J forums see
> > > > http://www.jsoftware.com/forums.htm
> > > > >>>>
> > > > >>>
> > ----------------------------------------------------------------------
> > > > >>> For information about J forums see
> > http://www.jsoftware.com/forums.htm
> > > > >>
> > ----------------------------------------------------------------------
> > > > >> For information about J forums see
> > http://www.jsoftware.com/forums.htm
> > > > >>
> > > > >>
> > > > >
> > ----------------------------------------------------------------------
> > > > > For information about J forums see
> > http://www.jsoftware.com/forums.htm
> > > >
> > > > ----------------------------------------------------------------------
> > > > For information about J forums see http://www.jsoftware.com/forums.htm
> > > >
> > > ----------------------------------------------------------------------
> > > For information about J forums see http://www.jsoftware.com/forums.htm
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> >
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
