Erlang: turn pid into string

Question

I want to turn a Pid in erlang <0.121.0> into a string, how would I do this?

Is there a way to pattern match against a Pid?

{Node, Index, Number} = <0.121.0>.

Answer 1

pid_tokens(Pid) ->
    PidStr = pid_to_list(Pid),
    PidStr1 = lists:sublist(PidStr, 2, length(PidStr)-2),
    [N, P1, P2] = [list_to_integer(T) || T <- string:tokens(PidStr1,[$.])],
    {N, P1, P2}.

Something like this may work for you. Where Pid is process id you want to match