From: Andy Wingo <wingo@pobox.com>
To: Wolfgang J Moeller <wjm@heenes.com>
Cc: bug-guile@gnu.org
Subject: shift and reset in ice-9 control
Date: Thu, 17 Mar 2011 11:53:31 +0100 [thread overview]
Message-ID: <m362ri10ic.fsf@unquote.localdomain> (raw)
In-Reply-To: <alpine.LNX.2.00.1103091049300.7892@gwdw03.gwdg.de> (Wolfgang J. Moeller's message of "Wed, 9 Mar 2011 11:53:38 +0100 (CET)")
Hello again Wolfgang,
On Wed 09 Mar 2011 11:53, Wolfgang J Moeller <wjm@heenes.com> writes:
> ;;; -*- scheme -*-
> ;;
> ;;; try reset & shift with GUILE V2 prompts
> ;;
> ;;
> (define-syntax reset
> (syntax-rules ()
> ((_ . body)
> (call-with-prompt 'Reset
> (lambda () . body)
> (lambda (cont f) (f cont))))))
> ;;
> (define-syntax shift
> (syntax-rules ()
> ((_ var . body)
> (abort-to-prompt 'Reset
> (lambda (cont)
> ((lambda (var) (reset . body))
> (lambda vals (reset (apply cont vals)))))))))
> ;;
> ;;
> (define (reset* thunk)
> (reset (thunk)))
> ;;
> (define (shift* fc)
> (shift c (fc c)))
Did you write these yourself? May we include them in (ice-9 control)?
If you have additional useful tests, we are happy to include them as
well. Probably the easiest thing would be to mail them to the list with
a permissive copyright header.
Cheers,
Andy
--
http://wingolog.org/
next prev parent reply other threads:[~2011-03-17 10:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-09 10:53 guile 2.0.0 crash related to call-with-prompt/abort-to-prompt, & more Wolfgang J Moeller
2011-03-11 20:02 ` Andy Wingo
2011-03-14 20:51 ` Andy Wingo
2011-03-14 22:00 ` Andy Wingo
2011-03-15 22:56 ` Andy Wingo
2011-03-17 10:53 ` Andy Wingo [this message]
2011-03-21 1:31 ` shift and reset in ice-9 control Wolfgang J Moeller
2011-03-30 14:56 ` Andy Wingo
2011-04-02 14:40 ` Wolfgang J Moeller
2011-04-12 9:51 ` Andy Wingo
2011-04-12 13:11 ` Wolfgang J Moeller
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