(j807 beta period is over. Please post to programming forum.) you try to see what is 5!:5<'head' and then substitute that into the sentence to see if the error can be reproduced.
Mon, 21 Jan 2019, Игорь Журавлёв написал(а): > I've found an error, but cannot reproduce it in the clean session. The > problem line (simplfied) is: > > follows=. heads ($@0:)`(~.@,@(] S: 0)@[)`]}&; (, a:) > > I've prepended it by the line: > > heads__=: heads > > to debug after that code breaks. So, session log looks like: > ========================================== > load 'app.ijs' > run_problem_verb '' > ... > |length error > | follows=. heads ($@0:)`(~.@,@(]S:0)@[)`]}&; , a: > heads ($@0:)`(~.@,@(] S: 0)@[)`]}&; (, a:) NB. try to reproduce > using noun from app: error is reproduced > |length error > | heads ($@0:)`(~.@,@(]S:0)@[)`]}&;(,a:) > heads2=. , a: > heads -:!.0 heads2 > 1 > heads2 ($@0:)`(~.@,@(] S: 0)@[)`]}&; (, a:) NB. try to reproduce > using identical noun: error isn't reproduced > > heads ($@0:)`($@0:@~.@,@(] S: 0)@[)`]}&; (, a:) NB. replace generated > ISO value by identical value: error isn't reproduced, too > > ($0) -:!.0 ~.@,@(] S: 0)@[ heads NB. what generated ISO value is > 1 > JVERSION > Engine: j807/j64/linux > Release-a: commercial/2019-01-11T11:05:56 > Library: 8.07.22 > Platform: Linux 64 > Installer: J807 install > InstallPath: /home/user/j64-807 > Contact: www.jsoftware.com > ========================================== > > So, 'head' noun copied from app breaks code, but identical fresh noun 'head2' > doesn't. If the value generated from 'heads' is replaced by identical value > ($0), this avoids error. > > -- > Regards, > Igor > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
