You are not really sharing data among applications in that case, you are using hash, for what I consider it most useful, internalized data management with limited scope.

The problem is people who use hashes to represent complicated relationships in complicated programs. A lack of restrictions using hashes can make them a nightmare when someone can just put anything anywhere. An example of this,

my $hash{'param'} = 'lh';

# code later
$hash{'PARAM'} = $hash{'param'};

# later still
print "Param is: " . $hash{'PARAM'} . "\n";

[download]

Here an object would have(hopefully) prevented this code from showing up. Someone did not not know about $hash{'param'} but did find $hash{'PARAM'}. Or the person wrote the print statement, it did not work, so included the the second assignment rather than change their print statement(maybe multiple times).

In reply to Re^3: Best Multidimensional Hash Practices? by Herkum
in thread Best Multidimensional Hash Practices? by DamianKaelGreen

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