run_mod_if_install.pl

#!/usr/bin/perl
use strict; use warnings;

my $data = [ 1, 2, 3, 4 ];

eval {
    require Data::Dumper;
    Data::Dumper->import();
	print Dumper($data);
    1;
} or do {
   my $error = $@;
   # Module load failed. You could recover, try loading
   # an alternate module, die with $error...
   # whatever's appropriate
   print "Module Data::Dumper not found See the below error about module\n##########\n$error\n##########\nStill continuing with the program\n";
};


print "\nRunning other things without Data::Dumper!\n";