$hash is an object. $hash->LicenseData(); calls the "method" LicenseData on the hash object. Without bothering with details, that means a sub named LicenseData is called and passed $hash as the first parameter. The LicenseData sub uses the contents of $hash to do some work.

$hash probably isn't a very good name. If the code were written:

sub LicenseData{
      my ($licCode) = @_;
      my $licObj = LIC_INFO($licCode);
      return $licObj->LicenseData();
}

[download]

it may be a little clearer.

Premature optimization is the root of all job security

In reply to Re: Understanding a OOp code by GrandFather
in thread Understanding a OOp code by sachinz2

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