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  1. or download this
    #!/usr/bin/perl -w
use strict;
...
$obj->ding('object method');
no strict 'refs';
&{$packagename."::ding"}('regular sub');
  2. or download this
    Ding (One,class method) called!
Ding (One=HASH(0x80fbc2c),object method) called!
Ding (regular sub) called!
  3. or download this
    -- 
Joost       downtime n. The period during which a system
            is error-free and immune from user input.