Arrays

I set up tied arrays just like I do tied scalars, but I have extra methods to create since I can do more with arrays. My implementation has to handle the array operators (shift, unshift, push, pop, splice) as well as the other array operations we often take for granted:

• Getting or setting the last array index

• Extending the array

• Checking that an index exists

• Deleting a element

• Clearing all the values