Does looking at the intermediate results make the overall expression more understandable to you?
2+\i.5 0 1 1 2 2 3 3 4 (+/"1) 2+\i.5 1 3 5 7 On Tue, Jul 31, 2018 at 8:22 PM, Linda Alvord <[email protected]> wrote: > (+/"1)2+\i.5 > 1 3 5 7 > > Linda > > Get Outlook for Android<https://aka.ms/ghei36> > > > > From: [email protected] > Sent: Tuesday, July 31, 3:35 PM > Subject: Re: [Jprogramming] What's happening here? > To: [email protected] > > > > I am running a much older J and the output is the same : > #(#~ > ((-:~.)*(-:\:~))"1)":,.p:1200+i.10 >1 I am running a much older J and the > output is not the same: #(#~ ((-:~.)*(-:\:~))"1)":,.p:1200+i.10 value > error Here, p: is not a primitive but a "given name", a user-(un)defined > name which would be immutable once defined. We are in twisty little maze of > J versions, all alike. It would really help me if people would always state > the exact J version, OS used, and platform used. Remember: "not *all* the > world is a DEC VAX", although, in the case above, it is close. It's a > DECsystem 5000/240, running Ultrix-4.4. The J is J Version 5.1 (1992). The > earliest J I can come up with to confirm the results 0 3 1: J 2.06.04 > Copyright (c) 1990-1995, Iverson Software Inc. on a i386 linux system of a > 1994ish slackwarish persuasion with libm.so.5 => /lib/libm.so.5.0.6 > libc.so.5 => /lib/libc.so.5.3.12 FWIW, same results on all J Releases 3.02, > 3.03, 4.01c, 4.01d, 4.02a, 4.05d+, j5.01b, j5.04 on that same i386 linux, > and on j602a_linux64, and j806/j32/raspberry from 2017-09-18 on a > non-raspberry ARM evaluation board running Debian 7.11. I guess that > accumulated enough Nerd Points for today. Martin > ---------------------------------------------------------------------- > For information about J forums see https://eur01.safelinks. > protection.outlook.com/?url=http%3A%2F%2Fwww.jsoftware. > com%2Fforums.htm&data=02%7C01%7C%7Ce1604c27471c4158d62b08d5f71cd050% > 7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636686625479080927&sdata= > b2oieHvDjWIZ%2ByITTwgp9N6C50tTz0gc5ro6FkcjvzM%3D&reserved=0 > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
