Merge pull request #215 from elixirkoans/minor-koan-rearrangement

Minor koan rearrangement

lib/koans/07_keyword_lists.ex

@@ -31,17 +31,4 @@ defmodule KeywordLists do
 
     assert_raise ArgumentError, fn -> not_kw_list[___] end
   end
-
-  koan "Conveniently keyword lists can be used for function options" do
-    transform = fn str, opts ->
-      if opts[:upcase] do
-        String.upcase(str)
-      else
-        str
-      end
-    end
-
-    assert transform.("good", upcase: true) == ___
-    assert transform.("good", upcase: false) == ___
-  end
 end

lib/koans/10_structs.ex

@@ -28,24 +28,16 @@ defmodule Structs do
     assert older.age == ___
   end
 
-  defmodule Plane do
-    defstruct passengers: 0, maker: :boeing
-  end
-
-  def plane?(%Plane{}), do: true
-  def plane?(_), do: false
-
-  koan "Or onto the type of the struct itself" do
-    assert plane?(%Plane{passengers: 417, maker: :boeing}) == ___
-    assert plane?(%Person{}) == ___
-  end
-
   koan "Struct can be treated like maps" do
     silvia = %Person{age: 22, name: "Silvia"}
 
     assert Map.fetch(silvia, :age) == ___
   end
 
+  defmodule Plane do
+    defstruct passengers: 0, maker: :boeing
+  end
+
   defmodule Airline do
     defstruct plane: %Plane{}, name: "Southwest"
   end
@@ -57,7 +49,7 @@ defmodule Structs do
 
   koan "Use the update_in macro to modify a nested value" do
     airline = %Airline{plane: %Plane{maker: :boeing, passengers: 200}}
-    assert update_in(airline.plane.passengers, &(&1 + 2)) == ___
+    assert update_in(airline.plane.passengers, fn(x) -> (x + 2) end) == ___
   end
 
   koan "Use the put_in macro with atoms to replace a nested value in a non-struct" do

lib/koans/12_pattern_matching.ex

@@ -101,6 +101,18 @@ defmodule PatternMatching do
     assert name == ___
   end
 
+  defmodule Plane do
+    defstruct passengers: 0, maker: :boeing
+  end
+
+  def plane?(%Plane{}), do: true
+  def plane?(_), do: false
+
+  koan "...or onto the type of the struct itself" do
+    assert plane?(%Plane{passengers: 417, maker: :boeing}) == ___
+    assert plane?(%Animal{}) == ___
+  end
+
   koan "Structs will even match with a regular map" do
     %{name: name} = %Animal{kind: "dog", name: "Max"}
     assert name == ___

lib/koans/13_functions.ex

@@ -97,4 +97,17 @@ defmodule Functions do
 
     assert result == ___
   end
+
+  koan "Conveniently keyword lists can be used for function options" do
+    transform = fn str, opts ->
+      if opts[:upcase] do
+        String.upcase(str)
+      else
+        str
+      end
+    end
+
+    assert transform.("good", upcase: true) == ___
+    assert transform.("good", upcase: false) == ___
+  end
 end