3.4.2 Functions

Perl also provides quite a few functions that operate on arrays. As you learn more and more Perl, you will see lots of interesting functions that work with arrays.

Now, we'll discuss a few of these functions that work on arrays: @builtin{push}, @builtin{pop}, @builtin{shift}, and @builtin{unshift}.

The names @builtin{shift} and @builtin{unshift} are an artifact of the Unix shells that used them to "shift around" incoming arguments.

3.4.2.1 Arrays as Stacks
3.4.2.2 Arrays as Queues