Re: What do I do wrong? I want an array of arrays

[sk]

in reply to What do I do wrong? I want an array of arrays

Where am I wrong?

      almost every line? :)

Let's deal with this by running the program. first trun on strict and wranings warnings. See my first 2 lines in the code

use strict;
use warnings;

my @b;
my @c={ 22,44,55};  
my @d={ "yy","tt"}; 
$b[0]=@c;           # are you trying to create 2-D array?
$b[1]=@d;
my @e= $b[1];       # i think you want b as 2-D array
print "<$e[0]>\n";

when you run it as is you get this warning

Odd number of elements in anonymous hash at nov line 7.<1>
Once you change {} to  () the code works but it does not do what you want. See $b[0] is a scalar and an array when evaluated under the scalar context returns the lenght of the array so bascially  $b[0] = @c; will put 3 into $b[0] or the first element of b.

If you want to do 2-D arrays you want to send them as references.

The code below does that

use strict;
use warnings;

my @b;
my @c=( 22,44,55);  # changed to ()
my @d=( "yy","tt"); # changed to ()
$b[0]=\@c;              # \@ creates a reference to the array @c.
$b[1]=\@d;
my @e= @{$b[1]};       # $b[1] is an array ref so use @{} to get back 
+the list.
print "<$e[0]>\n";

output:

<yy>

hope this helps