Is there a way to translate PID in a string representation ?

[Emmanuel Buu]

I am writting a SIP (Simple Initiation Protocol) stack in Elixir as an extended tutorial to learn Elixir.

It takes advantages of processes (each SIP transaction is a process). Now I'd like to use PID

as transaction ID but I can't find a way to translate PID to string:

iex(1)> toto = "#{self()}"

** (Protocol.UndefinedError) protocol String.Chars not implemented for #PID<0.57.0>

    (elixir) lib/string/chars.ex:3: String.Chars.impl_for!/1

    (elixir) lib/string/chars.ex:17: String.Chars.to_string/1

[Peter Hamilton]

I'd recommend against it. PIDs aren't guaranteed to be unique as they get recycled.

Anyway, to answer the question :erlang.pid_to_list/1 and Kernel.inspect/1 will both do what you want.

:erlang.pid_to_list/1 comes with this disclaimer:

Warning

This BIF is intended for debugging and is not to be used in application programs.

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[Alexei Sholik]

System.unique_integer might be a better candidate for transaction IDs.

[Louis Pilfold]

Hiya

unique_integer/0 seems to be in the :erlang module

Cheers,
Louis

> https://groups.google.com/d/msgid/elixir-lang-talk/CAAPY6ePKhTVq-Gsn8R5US0BZnS9LhZbjXwPFVgwoEmWkSsDpFQ%40mail.gmail.com.

[José Valim]

It is part of System in Elixir v1.2.

José Valim

www.plataformatec.com.br

Skype: jv.ptec

Founder and Director of R&D

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[Emmanuel Buu]

Le mardi 5 janvier 2016 12:37:40 UTC+1, Louis Pilfold a écrit :

Hiya

unique_integer/0 seems to be in the :erlang module

Cheers,
Louis

Ok, then I will go for this !