Re: removing duplicates from an array of hashes


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Re: removing duplicates from an array of hashes

by vinoth.ree (Monsignor)

on Apr 17, 2014 at 07:26 UTC ( [id://1082604]=note: print w/replies, xml )

Need Help??

in reply to removing duplicates from an array of hashes

Hi,

Here is another way of removing duplicate elements from array of hash.

use strict;
use warnings;
use Data::Dumper;

my $ref = [];
$ref->[0] = { id => 'a' };
$ref->[1] = { id => 'b' };
$ref->[2] = { id => 'c' };
$ref->[3] = { id => 'b' };

#But using temp hash
my $temp_hash={};

my @Uniqe_Array_Of_Hash = grep {  $_ && ++$temp_hash->{$_->{id}}< 2  }
+ @$ref;
print Dumper \@Uniqe_Array_Of_Hash;
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All is well