Multidimensional Arrays

[lmbylsma]

I'm not understanding how to create a multidimensional array by reading lines from a file.

So say I have a file like this:

0 1 2 3
4 5 6 7
8 9 10 11

With lines of numbers separated by tabs.

I would have something like this to read the lines from the file and put each line into the array:

my @Array;

while (<>) {

chomp;
push @Array, &quot;$_&quot;;
}

So that results in an array with 3 strings stored in it, tabs and all. But what I really want is to store each number as a separate element in the array so I can refer to each number using references such as @Array[0][1], @Array[2][3], etc. What do I do next to convert it to this form? Or perhaps even better to put it in the right form in the first place?

I tried some things with split /\t/ but wasn't able to get it right.

-Lauren

 

[raklet]

You will have to start using references and creating anonymous arrays to build this type of structure. It would look something like this:

use strict;
open (IN, &quot;$file&quot;
my @array;
while (<IN>) {
push @array, [split/\s+/]; #create anonymous array inside of @array
}
print $array[1][1]; #prints the value 5


The following links are good documentation on references and creating mulitdimensional data structures.

http://www.perldoc.com/perl5.8.0/pod/perlreftut.html

http://www.perldoc.com/perl5.8.0/pod/perlref.html

http://www.perldoc.com/perl5.8.0/pod/perllol.html

 

[raklet]

Change the split/\s+/ parameter to \t or whatever you are using. I copied your list of values into a text file but they came out being separated by just spaces.