3 ms·All data is immutable on the BEAM with a few exceptions, so no mutation within actors.by lpil 6y agoAll data is immutable on the BEAM with a few exceptions, so no mutation within actors.dnautics 6y agoNo, that's not true. Actors in elixir/erlang mutate their state through tail call recursion through the loop function.lpil 6y agoI said data is immutable on the BEAM, actors can update their state.