gistfile1.txt

iex(bark@argo)3> command "mirror me", &(String.reverse(&1))
** (exit) exited in: :gen_server.call({:global, Commands}, {:update, #Function<0.20429546/1 in Commands.add/1>}, 5000)
    ** (EXIT) an exception was raised:
        ** (BadFunctionError) expected a function, got: #Function<0.20429546/1 in Commands.add/1>
            (elixir) lib/agent/server.ex:20: Agent.Server.handle_call/3
            (stdlib) gen_server.erl:580: :gen_server.handle_msg/5
            (stdlib) proc_lib.erl:239: :proc_lib.init_p_do_apply/3
    (stdlib) gen_server.erl:190: :gen_server.call/3