hi Super doc, What I am trying to explain is that the list of keys in $c in hash1 should be exactly similar to list of keys in $f in hash2. I just want a list of keys that are not present in either of them. For ex: html $a = 'a, b , c , d, e, f'; $f = 'a, 1, c, d, 2, , f'; SO I want a report saying : $a is missing keys "1, 2". $f is missing keys "b, e". /html The hash that you used to explain works fine for simple hash tables with one key and one value. I am not sure how to build a data structure, for a hash like this one: html $hash1->{$a}{$b}{$c} $hash2->{$d}{$e}{$f} /html Can you help me out?

In reply to Re^2: hash keys compare by Anonymous Monk
in thread hash keys compare by Anonymous Monk

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.