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  1. or download this
    #!/usr/bin/perl

...

print $c3->() . "\n";
print $c4->() . "\n";
  2. or download this
    lexical variable SCALAR(0x604ff0) created at ./837669.pl line 5.
lexical variable SCALAR(0x6323f0) created at ./837669.pl line 5.
...
5
accessing SCALAR(0x6323f0) at ./837669.pl line 12.
6