The replies provided were fantastic.. I am not really sure if a bidirectional hash with key-value value-key combinations can also be considered and equally efficient in case you have a large amount of relations. Dear Monks please be free to criticize this, I aspire to learn by interaction.

This code here can let you treat all the right and left values as keys and as values of each other, then you may want to use the hash as a search dictionary:

#!/usr/local/bin/perl
#title "One to one relationship";
use strict;
use warnings;
use diagnostics;

my %hash;
while(<DATA>){
        next unless /"(\w+)".*"(\w+)"/gs;
        $hash{$1}=$2;
        $hash{$2}=$1;
        }

use Data::Dumper;
print Data::Dumper->Dump ([\%hash]);


__DATA__
"ger" <--> "german"
"ara" <--> "arabic"
"eng" <--> "english"

[download]

here's the output: 

$VAR1 = {
          'arabic' => 'ara',
          'ara' => 'arabic',
          'ger' => 'german',
          'german' => 'ger',
          'english' => 'eng',
          'eng' => 'english'
        };

[download]

Excellence is an Endeavor of Persistence. Chance Favors a Prepared Mind.

In reply to Re: One to one relationship by biohisham
in thread One to one relationship by Dirk80

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.