A Naive Implementation Of A Stack

stack.ex

defmodule Stack do
  defstruct name: "", value: 0
 
  def init() do
    _s = []
  end
 
  def push(name, value, s) do
    s_new =  [%Stack{name: name, value: value}, s]
    {:ok,s_new}
  end
 
  def pop(s) do
    [h|tail] = s
    {:ok, h, tail}
  end

  def depth(s) do
    length(s)
  end
 
end

#Use:
# s = Stack.init()
# {:ok, s} = Stack.push("a",1,s)
# {:ok, item, s} = Stack.pop(s)
# l = Stack.depth(s)