How can we retrieve the last value in a hash that has three key-value pairs?

There can't be a last value because hashes are unorderedreturn hash[-1]return hash[hash.count - 1]return hash[0]

Woohoo! We can't access a value in a hash with an index because hashes are unordered. What we need is a key.

Oh noes! We can't access a value in a hash with an index because hashes are unordered. What we need is a key.