September 2017 Update

Task/Events/Elixir/events.elixir

@@ -1,7 +1,7 @@
 defmodule Events do
   def log(msg) do
-    {h,m,s} = :erlang.time
-    :io.fwrite("~2.B:~2.B:~2.B => ~s~n",[h,m,s,msg])
+    time = Time.utc_now |> to_string |> String.slice(0..7)
+    IO.puts "#{time} => #{msg}"
   end
 
   def task do
@@ -14,12 +14,14 @@ defmodule Events do
 
   def main do
     log("Program start")
-    pid = spawn(Events,:task,[])
+    {pid,ref} = spawn_monitor(__MODULE__,:task,[])
     log("Program sleeping")
-    :timer.sleep(1000)
+    Process.sleep(1000)
     log("Program signalling event")
     send(pid, :go)
-    :timer.sleep(100)
+    receive do
+      {:DOWN,^ref,_,_,_} -> :task_is_down
+    end
   end
 end