I'll give you merlyn's "don't do my $class = ref($obj) || $obj" advice. Don't do it.

When I need abstract methods, I usually do: 

sub some_abstract_method {
  __abstract($_[0], caller);
  # ...
}


sub __abstract {
  my ($thing, $pkg, $file, $line) = @_;
  return if $thing ne __PACKAGE__;
  my $func = (caller 1)[3];
  die "$func is abstract; in $file line $line\n";
}

[download]
Same general principle, but I think it's a little cleaner.
_____________________________________________________
Jeff japhy Pinyan, P.L., P.M., P.O.D, X.S.: Perl, regex, and perl hacker
How can we ever be the sold short or the cheated, we who for every service have long ago been overpaid? ~~ Meister Eckhart

In reply to Re: Abstract Packages by japhy
in thread Abstract Packages by Velaki

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