Looks about the same, as expected as the hash methodology is the same. However the code you have posted does not actually do much, I presume they are typos, but if you tested this code the results dont mean much I'm afraid. In the second while loop you set up @array2 but then refer to @array - which because you do not lexically scope it using 'my' will be set to the last value found in the first while loop. You also do not set $dn so this will always be null. You don't need the else next bit at the end BTW - you do not gain anything from this as you are already at the end of the loop block. I would be interested as to how this code goes if you have time to test it. 

while (<XCH0S>) {
    chomp;
    tr/A-Z/a-z/;
    $xch0{(split",")[2]}++;    
}
while (<XCH3S>) {
    chomp;
    tr/A-Z/a-z/;
    my $dn = (split",")[2];    
    print "DN of extra record is: $dn\n" if !defined $xch0{$dn};
}

[download]

cheers

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print

In reply to Re: Re: Re: using hash uniqueness to find the odd man by tachyon
in thread using hash uniqueness to find the odd man by novitiate

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.