Columns in double dimension array

Hello monks

I am taking columns from a csv file , now I don't have the exact number of columns so I wish to use Double dimension array

so here is what I am doing

 
sub column_segregation
{
    
    my ($file,$col) = @_;
    use Text::CSV;
        
  my @array_A2 = ();
  open my $io,'<',$file or die "$!";
  my $csv = Text::CSV->new ({ binary => 1 });
  while (my $row = $csv->getline($io)) {
    push @array_A2, $row->[$col];
  }
  close $io;
  return (@array_A2);                                 

}

[download]

so this routine will return an array , now i want each column should go to each corresponding column in Double dimension array. i.e. column 1 should go to column of 1 DD array and so on .

So I have never worked with DD array so how to put it in the DD array column is what I need help with <\n>

Comment on Columns in double dimension array Download Code
Re: Columns in double dimension array by kcott (Monsignor) on Jul 17, 2013 at 08:42 UTC
G'day torres09, You asked about this less than 48 hours ago: indefinite number of columns You were provided with code for doing this and links to documentation explaining about this. How about you go back and read what's already been provided. If there was something you didn't understand, either in the code examples posted or the documentation linked to, then ask a specific question about that issue. -- Ken	[reply]
Re: Columns in double dimension array by Skeeve (Vicar) on Jul 17, 2013 at 08:46 UTC
I think, I don't understand the problem completely. `$csv->getline($io)` already returns a ref to an array where, each entry "n" is the cell of column "n+1". So this should already give you the correct array: `while (my $row = $csv->getline($io)) { push @DD, $row; }` [download] `$DD[$r][$c]` should give you the entry in row "r+1" and column "c+1". `s$$([},&%#}/&/]+}%&{});#$&&s&&$^X.($'^"%]=\&(\|?{%` `+`.+=%;.#_}\&"^"-+%*).}%:##%}={~=~:.")&e&&s""`$''`"e	[reply] [d/l] [select]
Re: Columns in double dimension array by Anonymous Monk on Jul 17, 2013 at 08:49 UTC
So I have never worked with DD array so how to put it in the DD array column is what I need help with Hmm, some of the answer in indefinite number of columns show that, so Basic debugging checklist to Data::Dump::dd some data to find out which one is the one you want Another example of working with arrays of arrays is in How to traverse a two dimentional array in a constructor? including a link to a free book which teaches this	[reply]
Reaped: Re: Columns in double dimension array by NodeReaper (Curate) on Jul 17, 2013 at 08:55 UTC
This node was taken out by the NodeReaper on Jul 26, 2013 at 22:07 UTC Reason: [MidLifeXis]: reap: partial dup of Re: Columns in double dimension array, OP struck this content. You may view the original node and the consideration vote tally.	[reply]
Re: Columns in double dimension array by mtmcc (Friar) on Jul 17, 2013 at 08:57 UTC
The documentation for array of arrays is here. Also, you could google it. I hope that helps. -Michael	[reply]
Re: Columns in double dimension array by BillKSmith (Hermit) on Jul 17, 2013 at 13:37 UTC
Strictly speaking, perl does not support double dimension arrays. It simulates them very well with arrays of references! The implication of this is that you cannot ignore the discussion of references in the doucmentation you have alread been given. Bill	[reply]


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