http://www.perlmonks.org?node_id=1027200


in reply to Re^7: Get just the unique value
in thread Get just the unique value

Sure, the end result is that $data only holds the unique values: From this: 
my $data = [
   {
 
     'type' => 'Paper'
   },
   {

     'type' => 'Paper'
   },
   {

     'type' => 'Plastic'
   },   {

     'type' => 'Plastic'
   },   {

     'type' => 'Plastic'
   },   {

     'type' => 'Plastic'
   },
   {

     'type' => 'Cotton'
   },
   {

     'type' => 'Cotton'
   },
   {

     'type' => 'Cotton'
   },
   {

     'type' => 'Cotton'
   },
   {

     'type' => 'Cotton'
   },
{

     'type' => 'Paper'
   },
{

     'type' => 'Paper'
   },
{

     'type' => 'Paper'
   },
{

     'type' => 'Paper'
   },
{

     'type' => 'Paper'
   },

];

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To that: 
 $data = [
   {
 
     'type' => 'Paper'
   },
  {

     'type' => 'Plastic'
   },
   {

     'type' => 'Cotton'
   },
 
];

[download]

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