[erlang-questions] erlang-questions Digest, Vol 12, Issue 98

[Mats Cronqvist]

John Haugeland wrote:
> Forgive my being naive.
[...]
>
> loop(State) ->
>     receive RcvState -> if
>         isa_quit(RcvState)       -> quit();
>         isa_connect(RcvState)    -> loop(conn(State));
>         isa_disconnect(RcvState) -> loop(disc(State));
>         isa_show_about(RcvState) -> loop(show_about(State));
>         isa_hide_about(RcvState) -> loop(hide_about(State));
>         isa_data(RcvState)       -> loop(update(State, RcvState));
>         X             -> io:fwrite("got ~p~n", [X]), loop(State)
>     end end.
>
> Everything's still named and abstracted, easier to maintain, update 
> and repair, but this doesn't require new syntax or compiler 
> alterations.  So, what am I missing?

  that it  won't compile?

 if lists:member(a,[a,b])->ok end.
** 1: illegal guard expression **

  mats