pdl2: Demos fail with Can't locate object method "slice" via package "comment" ...

[HaraldJoerg]

pdl2 gives the following identification:

Perldl2 Shell v0.008
      PDL comes with ABSOLUTELY NO WARRANTY. For details, see the file
      'COPYING' in the PDL distribution. This is free software and you
      are welcome to redistribute it under certain conditions, see
      the same file for details.

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Loaded PDL v2.082

load_rcfile: got $HOME = /home/haj
load_rcfile: loading PDL/default.perldlrc

The demos don't work in this setup: They die with the following message (with Devel::Confess enabled):

Runtime error: Can't locate object method "slice" via package "comment" (perhaps you forgot to load "comment"?) at (eval 396)[/usr/share/perl5/Devel/REPL.pm:120] line 18.

The "traditional" perldl shell works fine for the demos!

[mohawk2]

Thanks for the report! This was because the environment where the demo command runs in pdl2 did indeed have NiceSlice enabled, which means you can't do $coderef->(...). However, changing it to &{$coderef}(...) makes it work fine.