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';

. . .

[download]
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)

[download]
I tried to use the map function 
print map { "Key: $_ has Value:$self{$_}\n" } keys $self;

[download]
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

[download]
What is the perl way of displaying the contents of $self, $args, and $e?

In reply to Dump the key value pairs in a hash by byrnejb

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.