Visit Our UNIX and Linux User Community


Perl Hash:Can not keep hash data in the same order that it was inserted


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Perl Hash:Can not keep hash data in the same order that it was inserted
# 1  
Old 03-23-2010
Perl Hash:Can not keep hash data in the same order that it was inserted

Can Someone explain me why even using Tie::IxHash I can not get the output data in the same order that it was inserted? See code below.

Code:
#!/usr/bin/perl
use warnings;
use Tie::IxHash;
use strict;

tie (my %programs, "Tie::IxHash");

while (my $line = <DATA>) {
    chomp $line;
    my( $company, $site, $program, $product, $price) = split('--', $line);
    push @{ $programs{$program}{$product} }, $price;
}

for my $program (keys %programs) {
    print "$program\n";
    print "list of products: ", join(", ", keys %{$programs{$program}}), "\n";
    print "list of prices: ",
          join(", ", map { @{$programs{$program}{$_}} } keys %{$programs{$program}}), "\n";
}

__DATA__
COMPANY1--SITE1--PROGRAM1--PRODUCT1--PRICE1
COMPANY1--SITE1--PROGRAM2--PRODUCT1--PRICE1
COMPANY1--SITE1--PROGRAM1--PRODUCT2--PRICE3
COMPANY2--SITE1--PROGRAM1--PRODUCT1--PRICE2


Last edited by Franklin52; 03-23-2010 at 12:12 PM.. Reason: Please use code tags!
# 2  
Old 03-23-2010
it works

It seems it does work.
or can you explain what you expect for the result exactly?

Previous Thread | Next Thread
Test Your Knowledge in Computers #380
Difficulty: Medium
Apple's macOS (previously known as Mac OS X or OS X) is a UNIX 03 registered product.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Need to print hash of hash in table format

Hi, I have a hash of hash where it has name, activities and count i have data like this - $result->{$name}->{$activities} = $value; content of that are - name - robert tom cat peter activities - running, eating, sleeping , drinking, work i need to print output as below ... (3 Replies)
Discussion started by: asak
3 Replies

2. Shell Programming and Scripting

Dynamically parse BibTeX and create hash of hash

Hello gurus, Iam trying to parse following BibTex file (bibliography.bib): @book{Lee2000a, abstract = {Abstract goes here}, author = {Lee, Wenke and Stolfo, Salvatore J}, title = {{Data mining approaches for intrusion detection}}, year = {2000} } @article{Forrest1996, abstract =... (0 Replies)
Discussion started by: wakatana
0 Replies

3. Shell Programming and Scripting

Compare values of hashes of hash for n number of hash in perl without sorting.

Hi, I have an hashes of hash, where hash is dynamic, it can be n number of hash. i need to compare data_count values of all . my %result ( $abc => { 'data_count' => '10', 'ID' => 'ABC122', } $def => { 'data_count' => '20', 'ID' => 'defASe', ... (1 Reply)
Discussion started by: asak
1 Replies

4. Shell Programming and Scripting

Sorting values of hash in ascending order using Perl

I want to sort values of a hash in ascending order. my %records; for my $value (sort values %records){print $value,"\n";} When I use the above code I get values in this order: 1,10,11,2,3,4,5,6,7,8,9. But, I need values in my output in this order: 1,2,3,4,5,6,7,8,9,10,11. Can Someone... (1 Reply)
Discussion started by: koneru_18
1 Replies

5. Shell Programming and Scripting

Remove default data hash sorting in perl script?

Hi, I have a datahash with 'n' number of values in perl script. I am writing a xml file from the datahash. I am getting output with sorting(Field sorting). My question is that i don't want any default sorting.whatever i am inserting into datahash it should give same xml file. Any help? ... (0 Replies)
Discussion started by: solo123
0 Replies

6. Shell Programming and Scripting

perl hash - using a range as a hash key.

Hi, In Perl, is it possible to use a range of numbers with '..' as a key in a hash? Something in like: %hash = ( '768..1536' => '1G', '1537..2560' => '2G' ); That is, the range operation is evaluated, and all members of the range are... (3 Replies)
Discussion started by: dsw
3 Replies

7. Shell Programming and Scripting

Assigning a hash to another hash key

Hello, I have a hash in hsh. I need to assign it to another hash globalHsh. I think the below statement does not work $globalHsh{$id} = %hsh; What is the right way to assign it? Thanks (3 Replies)
Discussion started by: rsanjay
3 Replies

8. Shell Programming and Scripting

perl-extract data from hash values

Hello, I have parsed an xml file using perl to get the hash values and the output looks like this $VAR1 = { 'RT' => { 'List' => { 'String' => ... (1 Reply)
Discussion started by: userscript
1 Replies

9. Shell Programming and Scripting

PERL: reading 2 column data into Hash file

I am trying to read in a 2 column data file into Perl Hash array index. Here is my code. #!/usr/bin/perl -w use strict; use warnings; my $file = "file_a"; my @line = (); my $index = 0; my %ind_file = (); open(FILE, $file) or die($!); while(<FILE>) { chomp($_); if ($_ eq '') { ... (1 Reply)
Discussion started by: subhap
1 Replies

10. Shell Programming and Scripting

Print Entire hash list (hash of hashes)

I have a script with dynamic hash of hashes , and I want to print the entire hash (with all other hashes). Itried to do it recursively by checking if the current key is a hash and if yes call the current function again with refference to the sub hash. Most of the printing seems to be OK but in... (1 Reply)
Discussion started by: Alalush
1 Replies

Featured Tech Videos