class Hamster::Sequence


The last Sequence instance in the chain has the {EmptyList} as its tail.
Sequence.
each Sequence holding a single element and a pointer to the next
rest of the list. This way a singly linked list can be constructed, with
the head is an element in the list, and the tail is a reference to the
A Sequence, also known as a “cons cell”, has a head and a tail, where
The basic building block for constructing lists

def empty? 

def empty?
  false
end

def initialize(head, tail = EmptyList) 

def initialize(head, tail = EmptyList)
  @head = head
  @tail = tail
end