creeble:

I can think of a few possibilities, but I don't know if any would be good because i don't know how you intend to access the values, how fast you need to look them up, etc.

For example, you could concatenate all your strings into one long one using the scheme of having a byte containing the length of the field and the text. (You did mention that each object totals about 150 bytes of data, if I understand correctl.) Then your objects would store only the offset of the first field. Each access function would simply need to skip the appropriate number of fields.

$ cat t.pl
#!/usr/bin/perl
use strict;
use warnings;

my $joe = kablooie::new('Joe', 'Blow');
my $jane = kablooie::new('Jane', 'Smith');

my $name = $joe->fname();
print "joe's first name: $name\n";

$name = $jane->lname();
print "jane's last name: $name\n";

package kablooie;

my $kablooie_storage;
BEGIN {
    $kablooie_storage = "Bob's your uncle";
}

sub new {
    my ($fname,$lname) = @_;
    my $offset = length($kablooie_storage);
    $kablooie_storage .= chr(length($fname)) . $fname;
    $kablooie_storage .= chr(length($lname)) . $lname;
    return bless \$offset, 'kablooie';
}

sub fname {
    # FName is the first field
    my $self = shift;
    my $offset = $$self;
    my $len = ord(substr($kablooie_storage,$offset,1));
    return substr($kablooie_storage,$offset+1,$len);
}

sub lname {
    # LName is the second field
    my $self = shift;
    my $offset = $$self;
    my $len = ord(substr($kablooie_storage,$offset,1));
    $offset+=$len+1;
    $len = ord(substr($kablooie_storage,$offset,1));
    return substr($kablooie_storage,$offset+1,$len);
}
[download]

When run, I get:

$ perl t.pl
joe's first name: Joe
jane's last name: Smith
[download]

You could add some simple compression scheme, too. (RLE might be useful if you have lots of repeated characters, and if you don't mind restricting your character set, you could compress the characters into 6 bits each.)

That said, I have no idea how much space you could save using this technique, and whether it would be worth it or not.

...roboticus

When your only tool is a hammer, all problems look like your thumb.