comment on

I agree with Generoso: use SQL when possible.

P.S. Here's your structure:

use warnings;
use strict;
use Data::Dump qw(pp);

my %hash;
while (<DATA>) {
    chomp;
    next if /\A\s*\z/;
    my @pieces = split ',' => $_;
    for my $idx (3..4) {
        push @{
            $hash
            {$pieces[0]}
            {$pieces[1]}
            {$pieces[2]}
            [$idx-3]
        }, $pieces[$idx];
    }    
}
pp %hash;

__DATA__
Joe,A,1,85,90
Joe,A,1,80,99
Joe,A,2,50,70
Joe,A,2,60,65
Joe,A,2,87,89
Joe,B,1,82,92
Joe,B,3,30,51
Rob,A,1,64,77
Rob,B,2,20,32
[download]

(
  "Joe",
  {
    A => { 1 => [[85, 80], [90, 99]], 2 => [[50, 60, 87], [70, 65, 89]
+] },
    B => { 1 => [[82], [92]], 3 => [[30], [51]] },
  },
  "Rob",
  { A => { 1 => [[64], [77]] }, B => { 2 => [[20], [32]] } },
)
[download]

In reply to Re: hoh or hoa data structure by eff_i_g
in thread hoh or hoa data structure by rocky13

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.


go ahead... be a heretic
	PerlMonks