They call it aliasing, its special 
#!/usr/bin/perl --
use strict;
use warnings;

my $one = "hi ";
my $two = \$one;
$_ .= "there " for $one;
$$two .= "buddy ";
$two = "bye ";
print "one=$one\ntwo=$two\n";
__END__
one=hi there buddy
two=bye

[download]
The rule sounds familiar :)

In reply to Re: Magical data modification using $_ by Anonymous Monk
in thread Magical data modification using $_ by Sewi

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