   Returns whether a given key exists in the given keywords.
 
   ### Examples
-      Keyword.key?([a:, 1], :a)
+      Keyword.key?([a: 1], :a)
       #=> true
-      Keyword.key?([a:, 1], :b)
+      Keyword.key?([a: 1], :b)
       #=> false
   """
   def key?([{k, _}|_], key) when key < k, do: false


  ## Examples

      Keyword.from_enum [:a, :b], fn(x) -> {x,x} end
      #=> [a: :a, b: :b]
  """
  def new(pairs, transform) do


  ## Examples

      Keyword.new [{:b,1},{:a,2}]
      #=> [a: 2, b: 1]

  """
