Hello,
For sure 'use PDL' needs Nice Slice.
Have encountered also this problem
Le sam. 5 nov. 2022 à 01:36, Luis Mochan <moc...@icf.unam.mx> a écrit :
> 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 `>/ /\
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