Re: cond clause does not allow definitions

Damien Mattei <[email protected]>
Newsgroups gmane.lisp.guile.user
Message-ID <CADEOaddefNoZQthcu3LJde3jzE3GwYnsf6fUP_i_rP4weNF8MA@mail.gmail.com>
Bonjour,

so it is with the version i currently use which is older than you:
(base) mattei@mbp-touch-bar library-FunctProg % guile
GNU Guile 3.0.8.99-f3ea8
Copyright (C) 1995-2022 Free Software Foundation, Inc.

Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'.
This program is free software, and you are welcome to redistribute it
under certain conditions; type `,show c' for details.

Enter `,help' for help.
scheme@(guile-user)> (cond (#t (define x 7) x))
While compiling expression:
Syntax error:
unknown file:1:10: definition in expression context, where definitions are
not allowed, in form (define x 7)

thanks

On Wed, May 22, 2024 at 10:07 PM Jeronimo Pellegrini <[email protected]>
wrote:

> Hello!
>
> On 2024-05-22 16:26, Damien Mattei wrote:
> > scheme@(guile-user)> (cond (#t (define x 7) x))
> > While compiling expression:
> > Syntax error:
> > unknown file:7:10: definition in expression context, where definitions
> > are
> > not allowed, in form (define x 7)
>
> I get no error here (Guile 3.0.9.164-e1690, compiled locally):
>
> scheme@(guile-user)> (cond (else (define x 7) x))
> $1 = 7
> scheme@(guile-user)> (cond (#t (define x 7) x))
> $2 = 7
>
> A: (cond (#t (define x 7) x))
> B: (cond (else (define x 7) x))
>
> | system      | A     | B     |
> |-------------|-------|-------|
> | Bigloo      | 7     | 7     |
> | Biwa        | 7     | 7     |
> | Chez        | error | 7     |
> | Chibi       | error | 7     |
> | Chicken     | 7     | 7     |
> | Cyclone     | 7     | 7     |
> | Gambit      | error | error |
> | Gauche      | 7     | 7     |
> | Guile       | 7     | 7     |
> | Kawa        | 7     | 7     |
> | LIPS        | 7     | error |
> | Loko        | error | error |
> | MIT         | error | 7     |
> | Racket      | 7     | 7     |
> | Sagittarius | 7     | 7     |
> | Scheme48    | error | 7     |
> | Scheme 9    | error | 7     |
> | SCM         | 7     | 7     |
> | STklos      | 7     | 7     |
> | Tinyscheme  | 7     | 7     |
>
> * LIPS does not recognise the 'else' clause.
>
> J.
>
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