I tried to:
pid = spawn fn -> 1 + 2 end
IO.puts(pid)
IO.puts(IO.inspect(pid))
and both given a
** (Protocol.UndefinedError) protocol String.Chars not implemented for #PID<0.59.0>
There must be a way to get the "#PID<0.59.0>" representation of the pid, since the REPL prints that #PID<0.59.0>.
You don't need to wrap IO.inspect in a call to IO.puts. Simply calling IO.inspect will do what you're looking for.
pid = spawn fn -> 1 + 2 end
IO.inspect(pid)
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