Make issues more elixir-y

issues/lib/issues/cli.ex

@@ -18,24 +18,24 @@ defmodule Issues.CLI do
   Return a tuple of `{ user, project, count }`, or `:help` if help was given
   """
   def parse_args(argv) do
-    parse =
-      OptionParser.parse(argv,
-        switches: [help: :boolean],
-        aliases: [h: :help]
-      )
+    OptionParser.parse(argv,
+      switches: [help: :boolean],
+      aliases: [h: :help]
+    )
+    |> elem(1)
+    |> args_to_internal_representation
 
-    case parse do
-      {[help: true], _, _} ->
-        :help
+  end
 
-      {_, [user, project, count], _} ->
-        {user, project, String.to_integer(count)}
+  def args_to_internal_representation([user, project, count]) do
+    { user, project, String.to_integer(count) }
+  end
 
-      {_, [user, project], _} ->
-        {user, project, @default_count}
+  def args_to_internal_representation([user, project]) do
+    { user, project, @default_count }
+  end
 
-      _ ->
-        :help
-    end
+  def args_to_internal_representation(_) do # either bad arg or --help
+    :help
   end
 end