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From: Damien Mattei <damien.mattei@gmail.com>
To: guile-user <guile-user@gnu.org>, guile-devel <guile-devel@gnu.org>
Subject: Re: expression and definition context in Scheme
Date: Sat, 27 Aug 2022 21:02:16 +0200	[thread overview]
Message-ID: <CADEOadeSNAL6sk_cxGUkWq_d-h0ubnvSTri7j9prexMRk-9W-w@mail.gmail.com> (raw)
In-Reply-To: <b1c4073b-dbdf-e60c-ca7c-4088d8b6ef5d@telenet.be>

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hello Maxime,

On Sat, Aug 27, 2022 at 7:00 PM Maxime Devos <maximedevos@telenet.be> wrote:

>
> On 27-08-2022 18:48, Damien Mattei wrote:
>
> My ideas is as it is so easy to cheat the compiler
>
> I don't think it's cheating or abusive.
>
> from seeing the expressio context why does the compiler restrict this?
> expression and defintion context, i'm not sure they are in scheme
> standarts, are they really usefull?
> why not remove this from Scheme at all?
>
> I haven't read the RnRS closely, but I doubt that
>
> (some-procedure (define foo 0) (define bar 0))
>
? i do not understand well the meaning

> is allowed by the standard and that it could be meaningful.
>
in fact just allow 'define that act locally ,see my comment below

> Also, even if (begin ...) and (let () ...) where unified, it would be a
> shame to lose the ability to only have some definitions temporarily:
>
> (define foo 0)
>
> (let ((foo 0))
>   whatever-something-using-the-inner-foo)
>
> something-using-the-outer-foo-again
>
i do not propose foo to overwrite the global one , just to allow local
define that have a local (in the block) range.

> If 'let' was replaced by 'begin', then it would have different semantics.
>
> Greetings,
> Maxime.
>

Regards,
Damien

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  reply	other threads:[~2022-08-27 19:02 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-27 16:48 expression and definition context in Scheme Damien Mattei
2022-08-27 17:00 ` Maxime Devos
2022-08-27 19:02   ` Damien Mattei [this message]
2022-08-27 19:14     ` Maxime Devos
2022-08-27 19:20     ` Maxime Devos
     [not found]       ` <CADEOadfCCLaqEvzLYUzEYhg94pqN3r9=c6LT=FmCivJsPudUzg@mail.gmail.com>
     [not found]         ` <b95df274-b727-5bb9-4657-f263a837e0f1@telenet.be>
     [not found]           ` <CADEOadfKR_u3qS5N5MwRuCRTxPjKi_wyWzgv-xJJ96e56X2meg@mail.gmail.com>
2022-08-29 10:10             ` Fwd: " Damien Mattei
2022-08-30 10:47 ` Linus Björnstam
2022-08-31  7:01   ` Damien Mattei
2022-08-31 15:29     ` Maxime Devos
2022-09-01 20:21       ` Damien Mattei
2022-09-04  8:08         ` Damien Mattei
2022-09-07 23:12   ` Aleix Conchillo Flaqué

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