city-office & high-score

elixir/high-score/lib/high_score.ex

@@ -0,0 +1,21 @@
+defmodule HighScore do
+  @default_score 0
+
+  def new(),
+    do: %{}
+
+  def add_player(scores, name, score \\ @default_score),
+    do: Map.put(scores, name, score)
+
+  def remove_player(scores, name),
+    do: Map.delete(scores, name)
+
+  def reset_score(scores, name),
+    do: Map.put(scores, name, @default_score)
+
+  def update_score(scores, name, score),
+    do: Map.update(scores, name, score, &(&1 + score))
+
+  def get_players(scores),
+    do: Map.keys(scores)
+end