Using List Arrays

Using a list array

• The benefit of ordering the elements in a list array is that we can easily grab one value out of the list on demand. To do this, we use Perl's subscripting operator using the format:

  $array_name[list_element_number] 
  

• When pulling an element out of a list array, we create a scalar variable with the same name as the array, prefixed with the usual dollar sign that denotes scalar variables.

• For example, the first element of the array @available_colors is accessed as $available_colors[0].

• Notice that the first element is accessed with a zero. This is important. List arrays begin counting at zero, not one. Thus, $available_colors[0] is a variable placeholder for the word "red". Likewise, $available_colors[1] equals "green" and $available_colors[2] equals "blue".

Additional Resources:

• Perl
• Perl Resources

Perl List Arrays
Table of Contents
Figuring out how many elements are in an array