2016 Update

Task/Enumerations/Elixir/enumerations-1.elixir

@@ -1,4 +1,5 @@
 fruits = [:apple, :banana, :cherry]
-# fruits = ~w(apple banana cherry)a
+fruits = ~w(apple banana cherry)a                   # Above-mentioned different notation
 val = :banana
-Enum.member?(fruits, val)           #=> true
+Enum.member?(fruits, val)                           #=> true
+val in fruits                                       #=> true

Task/Enumerations/Elixir/enumerations-2.elixir

@@ -1,10 +1,10 @@
-fruits = [{:apple, 1}, {:banana, 2}, {:cherry, 3}]    # Keyword list
-fruits = [apple: 1, banana: 2, cherry: 3]             # Above-mentioned different notation
-fruits[:apple]                      #=> 1
-Dict.has_key?(fruits, :banana)      #=> true
+fruits = [{:apple, 1}, {:banana, 2}, {:cherry, 3}]  # Keyword list
+fruits = [apple: 1, banana: 2, cherry: 3]           # Above-mentioned different notation
+fruits[:apple]                                      #=> 1
+Keyword.has_key?(fruits, :banana)                   #=> true
 
-fruits = %{:apple=>1, :banana=>2, :cherry=>3}     # Map
-fruits = %{apple: 1, banana: 2, cherry: 3}        # Above-mentioned different notation
-fruits[:apple]                      #=> 1
-fruits.apple                        #=> 1     (Only When the key is Atom)
-Dict.has_key?(fruits, :banana)      #=> true
+fruits = %{:apple=>1, :banana=>2, :cherry=>3}       # Map
+fruits = %{apple: 1, banana: 2, cherry: 3}          # Above-mentioned different notation
+fruits[:apple]                                      #=> 1
+fruits.apple                                        #=> 1 (Only When the key is Atom)
+Map.has_key?(fruits, :banana)                       #=> true

Task/Enumerations/Elixir/enumerations-3.elixir

@@ -1,2 +1,7 @@
+# Keyword list
 fruits = ~w(apple banana cherry)a |> Enum.with_index
 #=> [apple: 0, banana: 1, cherry: 2]
+
+# Map
+fruits = ~w(apple banana cherry)a |> Enum.with_index |> Map.new
+#=> %{apple: 0, banana: 1, cherry: 2}