Magical Exporter Variable

        sub FETCH {
          my ($self, $key) = @_;
          $key;                          # Do NOTHING!
        }

• What was that all about?

     use Eval;

     $salary = 43_000;
     print "After your raise, you will make $Eval{$salary*1.06}.\n";

        # Prints ``.... will make 45580.''

• If you don't like the syntax, you can change it a little:

     use Eval => ':';

     $salary = 43_000;
     print "After your raise, you will make $:{$salary*1.06}.\n";

• We'll see a variation on this later this evening

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Copyright © 2003 M. J. Dominus