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Re : unwind-protect
Date: 3 Oct 88 07:08:04 GMT
** Subject: unwind-protect
** Message-ID: <10180@eddie.MIT.EDU>
** Date: 3 Oct 88 03:41:57 GMT
** Sender: uucp@eddie.MIT.EDU
** Reply-To: jbs@fenchurch.MIT.EDU (Jeff Siegal)
** Organization: MIT EE/CS Computer Facilities, Cambridge, MA
** Lines: 5
** How can one do something like UNWIND-PROTECT in Scheme? Is the
** concept completely ill-defined in the presence of first-class
** continuations, or is there an idiom which "sometimes works?"
** Jeff Siegal
Kent Dybvig's Chez Scheme has what seems to be a much more powerful construct
called "dynamic-wind". A brief sketch of its uses is given in Dybvig's
"The Scheme Programming Language".
-- Brad Pierce
Hmm. How would unwind-protect be expressed with just call/cc?