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
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