Quite misterious: I simplified the code to the following:
#! /usr/bin/env perl use PDL; use PDL::NiceSlice; my $x=sequence(1); my $V=$x/$x((-1)); #my $w=$A/$x((-1)); and it fails with the message syntax error at rem.txt line 5, near "$x(" The error corresponds to the line 'my $V=$x/$x((-1));' Nevertheless, if I remove the last comment, as in #! /usr/bin/env perl use PDL; use PDL::NiceSlice; my $x=sequence(1); my $V=$x/$x((-1)); the error message disappears. If I move the comment to the previous line it also disappears, but if I put it in the same line after the statement the error reappears. If I remove $x((-1)) from the comment the error also disappears. I guess it would be useful to see what is the output of the NiceSlice filter that contains the error and that is fed to Perl, but I don't know much about input filters. Regards, Luis On Thu, Nov 03, 2022 at 03:58:23PM +0300, Yury Pakhomov wrote: > Hello All! > > After update my system (Slackware 15) some PDL programs crashed. > For example, below is simple part of my code. > > code.pl > ________________________________ > #! /usr/bin/perl -w > #use v5.36; > use PDL; > use PDL::NiceSlice; > > my $c=299792; > > my $x=5000+sequence(100); > > # Average step in lam > my $dx=($x((-1))-$x((0)))/(nelem($x)-1); > > # Minimal step in V scale > my $dV=$c*$dx/$x((-1)); > > # Create uniform V scale (km/s) > my $n=int(log($x((-1))/$x((0)))/log(1+$dV/$c))+2; > my $v=sequence($n)*$dV; > _________________________________ > > # perl -c code.pl > syntax error at bad2.pl line 14, near "$x(" > bad2.pl had compilation errors. > > If I change line 14 to "my $dV=$c*$dx/$x->at(-1)->sclr;" then works fine. > Also the original code in other computer (perl 5.34) works fine too. > Moreover, if delete last three lines in code.pl, then it works! > Where source of these errors? > > > > > _______________________________________________ > pdl-general mailing list > pdl-general@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pdl-general > -- o W. Luis Mochán, | tel:(52)(777)329-1734 /<(*) Instituto de Ciencias Físicas, UNAM | fax:(52)(777)317-5388 `>/ /\ Av. Universidad s/n CP 62210 | (*)/\/ \ Cuernavaca, Morelos, México | moc...@fis.unam.mx /\_/\__/ GPG: 791EB9EB, C949 3F81 6D9B 1191 9A16 C2DF 5F0A C52B 791E B9EB _______________________________________________ pdl-general mailing list pdl-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pdl-general