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  1. or download this
    #!/usr/bin/perl -w
use strict;
...
print (Dumper($abc) . "\n"); #this will work fine
print (Data::Dumper->Dump(@$abc) . "\n"); # this will give usage error
+ as I mentioned earlier.
1;
  2. or download this
    Output:
$VAR1 = "cde";
...
        ];

Usage:  PACKAGE->new(ARRAYREF, [ARRAYREF]) at /tmp/ab123.pl line 8