From: Damien Mattei <damien.mattei@gmail.com>
To: guile-devel@gnu.org
Subject: new function
Date: Sun, 19 Sep 2021 09:54:41 +0200 [thread overview]
Message-ID: <CADEOadfF+rR=fW0fS-PkQkDN8EHFB1sJnkeePMJyc23m9shLgA@mail.gmail.com> (raw)
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hello,
i'm developing an extension to Scheme
and i need a procedure or macro that define a variable only if it is not
bind and if it is just set! it.
I can not do it in Guile or any Scheme,and i'm desperately searching a way
to do that. I finally conclude that it can be done only by adding it in the
language.
Can someone include a such function in Guile next release?
i know guile have a predicate defined? to test binfing of a vairable but
writing a macro with it is not possible because define can be used in an
expression context.
Thank in advance for any help
Damien
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next reply other threads:[~2021-09-19 7:54 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-19 7:54 Damien Mattei [this message]
2021-09-19 14:41 ` new function Matt Wette
2021-09-19 14:43 ` Matt Wette
2021-09-19 21:38 ` Taylan Kammer
2021-09-21 12:26 ` Damien Mattei
2021-09-22 8:44 ` Damien Mattei
2021-09-22 9:06 ` William ML Leslie
2021-09-22 9:53 ` Damien Mattei
2021-09-22 18:51 ` Taylan Kammer
2021-09-22 21:52 ` William ML Leslie
2021-09-23 8:40 ` Damien Mattei
2021-09-23 19:03 ` Taylan Kammer
2021-09-23 17:27 ` Damien Mattei
2021-09-23 18:00 ` Maxime Devos
2021-09-23 20:27 ` Taylan Kammer
2021-09-23 20:42 ` Damien Mattei
2021-09-23 20:48 ` Taylan Kammer
2021-09-23 21:53 ` Damien Mattei
2021-09-24 4:41 ` Damien Mattei
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