module Hamster::List

def eql?(other)

def eql?(other)
  list = self
  loop do
    return true if other.equal?(list)
    return false unless other.is_a?(List)
    return other.empty? if list.empty?
    return false if other.empty?
    return false unless other.head.eql?(list.head)
    list = list.tail
    other = other.tail
  end
end

Instance Methods