Merge pull request elixirkoans#224 from s-oram/add_anonymous_fn_koan

Add koan "You can use pattern matching to define [...]"

Author: felipesere

lib/koans/13_functions.ex

@@ -78,6 +78,16 @@ defmodule Functions do
     assert three_times.("foo") == ___
   end
 
+  koan "You can use pattern matching to define multiple cases for anonymous functions" do
+    inspirational_quote = fn
+      {:ok, result} -> "Success is #{result}"
+      {:error, reason} -> "You just lost #{reason}"
+    end
+
+    assert inspirational_quote.({:ok, "no accident"}) == ___
+    assert inspirational_quote.({:error, "the game"}) == ___
+  end
+
   def times_five_and_then(number, fun), do: fun.(number * 5)
   def square(number), do: number * number
 

test/koans/functions_koans_test.exs

@@ -15,6 +15,7 @@ defmodule FunctionsTests do
       6,
       "Hi, Foo!",
       ["foo", "foo", "foo"],
+      {:multiple, ["Success is no accident", "You just lost the game"]},
       100,
       1000,
       "Full Name",