The (A.) verb uses whatever argument you pass it. But the language is modular -- parsing of numbers is independent of (happens before) whatever operation(s) they will be used in.
So I think you are asking about the conversion table at https://www.jsoftware.com/help/dictionary/dictg.htm One issue here is that when dealing with large arrays, extended precision integers are slow to work with, and counter-productive. There are, of course, contexts where extended integers are preferred (such as your example here). And, it's relatively straightforward to specify their use for those cases. -- Raul On Sat, Aug 12, 2023 at 12:51 AM Ak O <akin...@gmail.com> wrote: > > Thank you. > > Just another small question. > > > For what reason other than speed does (x A. y) use anything other than > extended for the 'x' input? Other than integer, doesn't everything else > lead to inconsistent outputs (i.e. an incorrect permutation selection)? > > I am not sure of the different ways people use this operator but maybe some > other examples might help me understand more clearly. > > Thank you all again. > > Ak > > > > > On Fri., Aug. 11, 2023, 21:05 'Pascal Jasmin' via Programming, < > programm...@jsoftware.com> wrote: > > > if you (or a user) are calling your function from J code, add the x to > > any "literal numbers". > > If your very large number is the result of a calculation, then you can > > ensure that it is returned as extended. > > If the input comes from elsewhere/other program, then pass it as a string. > > > > ".@,&'x' '1239810239812039812039812039180319283019283' > > > > 1239810239812039812039812039180319283019283 > > > > > > On Friday, August 11, 2023 at 08:29:47 p.m. EDT, Ak O < > > akin...@gmail.com> 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
