lecture 06

lectures/06/counter/dynamic/client/dynamic_supervisor.ex

@@ -0,0 +1,13 @@
+defmodule Counter.DynamicSupervisor do
+  @name  {:global, __MODULE__}
+
+  def start_link(_) do
+    DynamicSupervisor.start_link(__MODULE__, nil, name: @name)
+  end
+
+  def start_worker(name) do
+    DynamicSupervisor.start_child(@name, %{
+      id: Counter.Worker, 
+      start: {Counter.Worker, :start_link, [name]}})
+  end
+end

lectures/06/counter/dynamic/client/worker.ex

@@ -0,0 +1,18 @@
+defmodule Counter.Worker do
+  # client
+  def start_link(name) do
+    GenServer.start_link(__MODULE__, name, name: via(name))
+  end
+
+  def value(name) do
+    GenServer.call(via(name), :value)
+  end
+
+  def inc(name, amt \\ 1) do
+    GenServer.cast(via(name), {:inc, amt})
+  end
+
+  defp via(name) do
+    {:global, name}
+  end
+end