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One can define a default function AUTOLOAD to resolve unsatisfied subroutine references in a given (set of) packages
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You set up AUTOLOAD to deal with this case in whatever way you want!
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AUTOLOAD is passed arguments that were passed to called subroutine and name of unsatisfied external is in variable $AUTOLOAD
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sub AUTOLOAD { # Call UNIX for unsatisfied externals
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my $program = $AUTOLOAD;
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$program =~ s/.*:://; # remove any package precursors
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system($program, @_);
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}
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date(); # will be executed correctly by above AUTOLOAD
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