in reply to Re^5: Value into array
in thread Value into array

I managed to write the code like this. 
my @input_array = (N1,N2,N3,N6,N7); #not fixed (user input)

for(my $i=0; $i < @input_array; $i++) 
{
    my %hash = (
        $input_array[$i] => { CC0 => 1, CC1 => 1},
    );
    print "CC0[", $input_array[$i], "] : ";
    print $hash{$input_array[$i]}{CC0}, "\n";
    
    print "CC1[", $input_array[$i], "] : ";
    print $hash{$input_array[$i]}{CC1}, "\n\n";
}

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Here is the output: 
CC0[n1] : 1
CC1[n1] : 1

CC0[n2] : 1
CC1[n2] : 1

CC0[n3] : 1
CC1[n3] : 1

CC0[n6] : 1
CC1[n6] : 1

CC0[n7] : 1
CC1[n7] : 1

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The next thing I want to do is to store each CC0 value into one array. And store each CC1 value into one array. Because I need to update those values later by performing a few calculations. What should I do next?

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Re^7: Value into array
by Marshall (Canon) on Apr 08, 2019 at 09:25 UTC 
    #!/usr/bin/perl
use strict;
use warnings;

my @input_array = qw(N1 N2 N3 N6 N7 B3 B4); #not fixed (user input)

# I would recommend a "hash of array"
# each "name" in the hash table like N1 or B3 points to a simple array
# the first member of this array is CC0 and the second member is CC1

my %hash;
foreach my $inputKey (@input_array)
{
    @{$hash{$inputKey}} = (1,"xyz"); # each key of the hash has an
                                     # array with 2 members
}   

foreach my $key (sort keys %hash)
{
    my ($CC0, $CC1) = @{$hash{$key}};
    print "key=$key; CC0=$CC0; CC1=$CC1\n";
}

__END__
prints:
key=B3; CC0=1; CC1=xyz
key=B4; CC0=1; CC1=xyz
key=N1; CC0=1; CC1=xyz
key=N2; CC0=1; CC1=xyz
key=N3; CC0=1; CC1=xyz
key=N6; CC0=1; CC1=xyz
key=N7; CC0=1; CC1=xyz

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    Update: Another code example: 
    #!/usr/bin/perl
use strict;
use warnings;
use constant {CC0 => 0, CC1 =>1}; # just some "gravy"
                                  # CC0 means 0 and CC1 means 1
use Data::Dump qw(pp dd);

my @input_array = qw(N1 N2 N3 N6 N7 B3 B4); #not fixed (user input)

my %hash;
foreach my $inputKey (@input_array)
{
    @{$hash{$inputKey}} = (1,"xyz"); # each key of the hash has an
                                     # array with 2 members
}   

#### set N3, CC0 to "hey" #####

my @array = @{$hash{"N3"}}; # read array for hash key of N3
$array[CC0] = "hey";        # modify array
@{$hash{"N3"}} = @array;    # write modified array back

## update..
## yes, @{$hash{"N3"}}[CC0] = "hey";
## will do the same thing, but I wanted to show simple steps

pp \%hash;

__END__
{
  B3 => [1, "xyz"],
  B4 => [1, "xyz"],
  N1 => [1, "xyz"],
  N2 => [1, "xyz"],
  N3 => ["hey", "xyz"],
  N6 => [1, "xyz"],
  N7 => [1, "xyz"],
}

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