Hi everyone,

Can anyone help me understand what happens here:

version 1:

map { die "bug before!" if (!defined($_)); } values %{$self->{docs}};
my @docsObservs = map { $_->getObservations() } values %{$self->{docs}
+};
map { die "bug after!" if (!defined($_)); } values %{$self->{docs}};
print "ok\n";

[download]

result:

bug after! at .....

[download]

Version 2:

map { die "bug before!" if (!defined($_)); } values %{$self->{docs}};
my @docsObservs;
foreach my $docP (values %{$self->{docs}}) {
  push(@docsObservs, $docP->getObservations());
}
map { die "bug after!" if (!defined($_)); } values %{$self->{docs}};
print "ok\n";

[download]

result:

ok

[download]

This is just one part of a quite big program that I'm in the process of debugging, so I certainly still have bugs. But I'm puzzled by the fact that switching from version 1 to version 2 (without any other change) solves the issue. I can happily use version 2 of course, but I can't see what is wrong in the first version and I don't like that ;) Any idea?

Thanks!

In reply to Strange bug with map by erwan

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