test "map.mergd" do s = :crypto.strong_rand_bytes(32) # <<116, 101, 115, 116, 58, 0>> # = "test:" <> <<0>> # IO.inspect(String.slice(b, 0, 4)) c = "test:" <> s IO.inspect(c) dd = Base.url_encode64(c) {:ok, he} = Base.url_decode64(dd) IO.inspect(String.split(he, ":")) end