[erlang-questions] Process scope variable

[Imants Cekusins]

> So much time spent for removing one State variable from a few function calls.

much more time will be saved when refactoring from now on.

imagine:
most funs will now have signature:

-spec a(pid()) -> ok.

and most function bodies will look like:
check(Pid),
update(Pid),
return(Pid).

it will be a breeze now.