Subject: Re: DSSSL extensions for XSL From: christo@xxxxxxxxxxxxxxxxxx (Frank Christoph) Date: Mon, 29 Sep 1997 10:17:51 +0900 |
> > > Is an upwards-only call/cc very valuable. > > > > It's useful for all things you would use return/break/continue for in C, > > Java or JavaScript. > > > > > I know that it can be used to > > > implement exception handling, but I think it may be more confusing than > > > helpful. A catch/throw special form might be more appropriate. Are there > > > other uses of an upwards-only call/cc? What "upwards-only" call/cc is supposed to denote? I'm aware of something similar to "downwards-only" call/cc, namely the so-called call/ec (call-with-escaping-continuation). This might be called downwards-only because the continuation can be passed down, but not up and out of the protected expression. Is this what you mean? --FC DSSSList info and archive: http://www.mulberrytech.com/dsssl/dssslist
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