Re: Digest for EUforum at topica.com, issue 4200
Christian Cuvier wrote:
>
> > Subject: Re: Contest
> >
> >
> > posted by: Derek Parnell <ddparnell at bigpond.com>
> >
> > Tommy Carlier wrote:
> >
> >>>
> >>> Some questions:
> >>> 1. How far can we go in using machine-code?
> >>> 2. How far can we go in calling external DLLs/routines?
> >>>
> >>> To make the contest interesting and competitive for everybody,
> >>> I think it would be a good idea to disallow machine-code, and
> >>> make it a pure Euphoria-contest.
> >>> Calling external DLLs/routines also means that it's not pure
> >>> Euphoria.
> >>> I think it would be a big challenge for everybody, if only
> >>> the use of Euphoria-code was allowed: no call, open_dll,
> >>> define_c_proc, define_c_func, c_proc or c_func.
> >
> >
> > Good point. I'll make this a stipulation. I did want to encourage Euphoria
> > code.
> >
>
> Sorry to disagree here, but...
That's okay. I don't mind.
> Euphoria has some strong points, and one of them is the relative ease with
> which machine code can be interfaced with. The open_dll("",address) variant
> added to Eu2.4 is meant to make it easier as I understand it. So, that
> interfacing IS PART of pre Eu code imho; why discourage it?
Firstly, I'm not using this contest to try and *discourage* interfacing
Euphoria with code from other languages. Secondly, I'm trying to
use the contest to encourage the use of Euphoria.
In the extreme, if I allowed the use of other languages, one could do
something like ...
cmd = command_line()
x = open_dll("mydll")
y = define_c_proc(x, "doit", {C_POINTER})
z = allocate_string(cmd[3])
c_proc(t,{z})
Hardly an exercise in using Euphoria.
> Further, call() carries a sizeable performance penalty (probably because of a
> task switch), so that using it wouldn't be an obvious way to utmost speed.
>
> There's a rule already saying that any attempt to access any file other than
> an include disqualifies the submission. This is enough to rule out using
> shared libraries. I'm not sure adding a ban on machine code will encourage
> anything: the way you interface it with Eu is still "Euphoria code", and
> possibly not the easiest part, if only because sequences are not mere C-like
> arrays.
I take on board your objection, but I shall not be removing this contest
rule based on the argument you present here. The rule serves my purpose.
You can always set up your own contest.
--
Derek Parnell
Melbourne, Australia
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