TIPS.md

Tips & Tricks

Booting up a node

  $ erl -name something@your.ip.goes.here -setcookie 'the-cookie'

Starting the game

  1> net_adm:ping('gold_fever@server.ip.goes.here').

Keeping your progress safe

Since you'll most likely need to restart multiple times, I recommend creating a file (e.g. solver.erl). Then, add a function (e.g. run/0) to it so that each time you need to restart, you can do…

  1> c(solver).
  {ok, solver}
  2> solver:run().
  …

Erlang tricks

RTFM

Check erldocs.

Remotely check process properties

  rpc:pinfo(Pid, something).

Sending messages to FSMs

  gen_fsm:sync_send_event(Pid, Msg).
  gen_fsm:sync_send_all_state_event(Pid, Msg).

How not to be killed?

  process_flag(trap_exit, true).

Send a message to a process in a different node if you know its registered_name

  {'name-of-the-process', 'gold_fever@server.ip.goes.here'} ! message.
  % or… if it's a gen_server…
  gen_server:call({'name-of-the-process', 'gold_fever@server.ip.goes.here'}, message).