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Re: will the real current continuation please stand up
- To: Bill Rozas <JINX%MIT-OZ@MIT-MC>
- Subject: Re: will the real current continuation please stand up
- From: Paul Hudak <Hudak@YALE.ARPA>
- Date: Fri ,1 Nov 85 15:47:58 EDT
- Cc: SCHEME@MIT-MC
- In-reply-to: Bill Rozas <JINX%MIT-OZ@MIT-MC.ARPA>, 30 Oct 1985 20:32 EST (Wed)
As far as HUDAK@YALE's original question: He distinguished between
the continuation to the CALL-WITH-CURRENT-CONTINUATION invocation
(outer continuation), and the continuation to the argument (inner
continuation), but the way I see it both are the same.
I see your point. I guess it all depends on how one defines
"continuation." I was interpreting it as "what happens next,"
so in your definition:
(define (call-with-current-continuation *cont* receiver)
(receiver *cont* *cont*))
what happens next is a call to receiver, so the (eventual) call to
*cont* is "delayed." On the other hand, in:
(define (current-continuation *cont*)
the current continuation is called immediately (i.e., passed to itself),
which is of course what you pointed out in the first part of your message.