Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
How about this?

#!/usr/local/bin/perl -w use strict; use Data::Dumper; my %old_hash = ( '1.1.1.1' => 'nfs,1', '4.4.4.4' => 'cifs,0', '10.0.4.2' => 'afp,1', '3.3.3.3' => 'nfs,0', '5.5.5.5' => 'afp,0', ); my %new_hash = ( '1.1.1.1' => 'nfs,0', # index change '200.4.4.4' => 'cifs,0', # IP change '200.0.4.2' => 'afp,1', # IP change '3.3.3.3' => 'nfs,1', # index change '5.5.5.5' => 'afp,0', '4.22.2.22' => 'afp,2', # new entry ); my %changes; foreach my $key ( keys %new_hash ) { $changes{$key} = $new_hash{$key} unless ( (exists $old_hash{$key}) && $new_hash{$key} eq $old_h +ash{$key} ); # gotta check for existence to quiet warnings. } print Dumper( \%changes );
Outputs:
:!./test.pl $VAR1 = { '4.22.2.22' => 'afp,2', '1.1.1.1' => 'nfs,0', '3.3.3.3' => 'nfs,1', '200.4.4.4' => 'cifs,0', '200.0.4.2' => 'afp,1' };
Let me know if you see anything that it would miss.

In reply to Re: Diff on hashes by Wonko the sane
in thread Diff on hashes by hotshot

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, 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, 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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others musing on the Monastery: (5)
    As of 2020-06-02 15:15 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?
      Do you really want to know if there is extraterrestrial life?



      Results (19 votes). Check out past polls.

      Notices?