Hello Monks,

I was playing around with ARRAYS OF HASHES in order to reduce the defined scalars on my script. I manage to get to the point that I want with a working solution but I am wondering if I can do the same work with less lines of code.

I am using an Array of Hashes to pass the values that I want. Then I am trying to extract the values into an array. I will apply the reversed process afterwards (values map to an Array of Hashes).

For the moment I am using two for loops to extract the values from an Array of Hashes, but I was wondering if I can use map to do the same thing in one line instead of having two loops.

Sample of code and output:

#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;
use Time::HiRes qw( gettimeofday );

my @Array_Hash_To_Send = (
    { LI_VN_Mode                    => '00100011' }, # 8 bit
    { Stratum                       => '0' },        # 8 bit
    { Poll                          => '0' },        # 8 bit
    { Precision                     => '0' },        # 8 bit
    { Root_Delay                    => '0' },        # 32 bit
    { Dispersion                    => '0' },        # 32 bit
    { Reference_Identifier          => '0' },        # 32 bit
    { Reference_Timestamp_Sec       => '0' },        # 32 bit
    { Reference_Timestamp_Micro_Sec => '0' },        # 32 bit
    { Originate_Timestamp_Sec       => '0' },        # 32 bit
    { Originate_Timestamp_Micro_Sec => '0' },        # 32 bit
    { Receive_Timestamp_Sec         => '0' },        # 32 bit
    { Receive_Timestamp_Micro_Sec   => '0' },        # 32 bit
    { Transmit_Timestamp_Sec        => '0' },        # 32 bit
    { Transmit_Timestamp_Micro_Sec  => '0' },        # 32 bit
    );

($Array_Hash_To_Send[13]{Transmit_Timestamp_Sec} , $Array_Hash_To_Send
+[14]{Transmit_Timestamp_Micro_Sec}) = gettimeofday();

# For demonstration purposes only
my @arraySendSntpPacket = ( $Array_Hash_To_Send[0]{LI_VN_Mode},
                $Array_Hash_To_Send[1]{Stratum},
                $Array_Hash_To_Send[2]{Poll},
                $Array_Hash_To_Send[3]{Precision},
                $Array_Hash_To_Send[4]{Root_Delay},
                $Array_Hash_To_Send[5]{Dispersion},
                $Array_Hash_To_Send[6]{Reference_Identifier},
                $Array_Hash_To_Send[7]{Reference_Timestamp_Sec},
                $Array_Hash_To_Send[8]{Reference_Timestamp_Micro_Sec},
                $Array_Hash_To_Send[9]{Originate_Timestamp_Sec},
                $Array_Hash_To_Send[10]{Originate_Timestamp_Micro_Sec}
+,
                $Array_Hash_To_Send[11]{Receive_Timestamp_Sec},
                $Array_Hash_To_Send[12]{Receive_Timestamp_Micro_Sec},
                $Array_Hash_To_Send[13]{Transmit_Timestamp_Sec},
                $Array_Hash_To_Send[14]{Transmit_Timestamp_Micro_Sec} 
+);

my @Test_Array;
foreach my $href ( @Array_Hash_To_Send ) {
    foreach my $role ( keys %$href ) {
    push @Test_Array, $href->{$role};
    }
}

my @Test_Array_Values = map {  } keys 

print Dumper \@arraySendSntpPacket;
print Dumper \@Test_Array;


my @Test_Array_Values = values @Array_Hash_To_Send;

__END__

$VAR1 = [
          '00100011',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          1437578739,
          958207
        ];
$VAR1 = [
          '00100011',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          '0',
          1437578739,
          958207
        ];

[download]

Thank you in advance for your time and effort reading and replying to my question.

Seeking for Perl wisdom...on the process of learning...not there...yet!

In reply to [SOLVED] How to extract the values of an Array of Hashes by thanos1983

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