Re^2: How to set variable names using Text::CSV?

Tanktalus,

my ($id_name, $filename, $last_name, $first_name, $alignment, $generic_class_name, $class_name, $generic_race, $race, $gender, $experience, $strength, $dexterity, $constitution, $intelligence, $wisdom, $charisma) = qw(test) x 17; is just a placeholder, and will be gone in the final code as will all the Data::Dumper stuff since it isn't doing me any good at the moment.

I have read, reread, and reread Text::CSV and Text::CSV_XS, and they do not tell me what I need to know, how to use the data once I get it. I tried to bind the columns, and that didn't work. I am at my wits end trying to make this work. I just don't get what Text::CSV is doing.

I can't even figure out why tie %csv, qw(Tie::IxHash); doesn't work.

I have written the two hashes in two ways, and they don't work.

%general_information = (
  "class(es)" => $csv{"class_name"},
  alignment => $csv{"alignment"},
  race => $csv{"race"},
  gender => $csv{"gender"},
);

%ability_scores = (
  strength => $csv{"strength"},
  dexterity => $csv{"dexterity"},
  constitution => $csv{"constitution"},
  intelligence => $csv{"intelligence"},
  wisdom => $csv{"wisdom"},
  charisma => $csv{"charisma"},
);

%general_information = (
  "class(es)" => $csv->{class_name},
  alignment => $csv->{alignment},
  race => $csv->{race},
  gender => $csv->{gender},
);

%ability_scores = (
  strength => $csv->{strength},
  dexterity => $csv->{dexterity},
  constitution => $csv->{constitution},
  intelligence => $csv->{intelligence},
  wisdom => $csv->{wisdom},
  charisma => $csv->{charisma},
);
[download]

I am missing a big piece of this puzzle and don't know what it is.

Have a nice day!

Lady Aleena

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Re^3: How to set variable names using Text::CSV? by Tanktalus (Canon) on Oct 16, 2009 at 05:24 UTC
You're not really explaining what you want to do. Because, as far as I can tell, your first script works just fine. Once you get the $hr, you print Dumper($hr), and the output you see to your screen will look like: `$VAR1 = { 'class_name' => '1st level Fighter/1st level Thief/1st level + Mage', 'intelligence' => '18', 'wisdom' => '14', 'charisma' => '15', 'experience' => '0', 'dexterity' => '18', 'strength' => '18(93)', 'last_name' => 'Zendelic', 'generic_class_name' => 'Fighter-Thief-Mage', 'filename' => '!ZeKy', 'generic_race' => 'Half-Elf', 'constitution' => '17', 'race' => 'Half-Elf', 'alignment' => 'Neutral Good', 'gender' => 'Female', 'id_name' => 'Kymaria_Zendelic', 'first_name' => 'Kymaria' };` [download] That means that $hr is a reference to a hash (see the braces? Just like in your perl code when you want a reference to an anonymous hash). You could print ref($hr) to see that it says HASH. That means that if you put the rest of your character-handling-code inside that loop, and use $hr as a reference to a hash containing all the variables you care about, you should be off and running: `while (defined (my $hr = $csv->getline_hr($io))) { # use $hr->{id_name} to get the id_name }` [download] You can't use Tie::IxHash because, well, you're not populating the hash. You'll probably have to extract things yourself in the order you want, but that's ok, you already have the order you want as @names. (Using DBD::CSV allows you to do this, too, but we'll stick with what you have for now.) So, you'll have this loop: `while (defined (my $hr = $csv->getline_hr($io))) { my %general_information = ( "class(es)" => $hr->{class_name}, alignment => $hr->{alignment}, race => $hr->{race}, gender => $hr->{gender}, ); my %ability_scores = ( strength => $hr->{strength}, dexterity => $hr->{dexterity}, constitution => $hr->{constitution}, intelligence => $hr->{intelligence}, wisdom => $hr->{wisdom}, charisma => $hr->{charisma}, ); # do stuff with the above hashes. }` [download] Mind you, that does seem somewhat repetitive, and I'm not a fan of repetition, so ... `while (defined (my $hr = $csv->getline_hr($io))) { my %general_information = ( "class(es)" => $hr->{class_name}, map { $_ => $hr->{$_} } qw/alignment ra +ce gender/; ); my %ability_scores = ( map { $_ => $hr->{$_} } qw/strength dexterity constitution intelligence wisdom charisma/ ); # here you can use them, same as previous example. list_loop(\%general_information); list_loop(\%ability_scores); }` [download] Now, in these cases, you can use Tie::IxHash if you want to control the order of the keys, otherwise the order will be different each time you run (possibly).	[reply] [d/l] [select]
Re^4: How to set variable names using Text::CSV? by Lady_Aleena (Priest) on Oct 16, 2009 at 06:16 UTC
Tanktalus, If I knew you a bit better, I would kiss you all over the face. The best I can do is give you some zen-cookies. You answered the big question I didn't know to ask, what was the proper hashref. This is what happens when one leaves a script for a long while and comes back. Without semantic names, one forgets what is what. So, I was left with a whole bunch of letters that were meaningless and not knowing what was doing what, because I am still not good at this. Use this as a cautionary tale about nonsemantic variable names. I still couldn't get it to dump the big hash tied up, but that is okay. I don't need it. Here is the script that works! Read more... (2 kB) While you are not a fan or repetition, I am not that big a fan of sprawl. I hope you don't mind. *Have a nice day!* Lady Aleena	[reply] [d/l]