I am not a perl programmer. I do have to maintain a legacy perl application. Something has changed in the environment so that it no longer correctly reports the status of public key certificates. I need to discover what that change is and how to accommodate it. The critical piece of code appears to be:

sub genHTMLTableRow
  {
    my $self = shift;
    my $args = shift;
    my $e = shift;
    my $ser = $e->{serial};
    my $pem = $ser.'.html';

. . .
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What I wish to do for debugging purposes is to dump the actual contents of $self, $args, and $e. I tried the naive approach of using print "$self\n"; but that just gave me this:

CSP=HASH(0x800b1e060)
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I tried to use the map function

print map { "Key: $_ has Value:$self{$_}\n" } keys $self;
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I clearly do not understand the naming conventions of perl variables as this usage of map causes the error:

  Global symbol "%self" requires explicit package name (did you forget
+ to declare "my %self"?) at /root/bin/rcsp/blib/lib/CSP.pm line 861
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What is the perl way of displaying the contents of $self, $args, and $e?