Subject: Re: DSSSL extensions for XSL From: Paul Prescod <papresco@xxxxxxxxxxxxxxxx> Date: Sun, 28 Sep 1997 06:56:54 -0400 |
These extensions to DSSSL look very useful, even for those not interested in XSL (if there happens to be anyone in that category...). Great work! As I understand the iterative extensions, they do not really alleviate the difficulty with passing information between construction rules. In other words they don't seem to add much functionality to the language. They just present a more familiar language interface to people who are used to imperative languages. If this is the case, I would also like to suggest that the imperative extensions include "do" which is not currently documented as being available. Is an upwards-only call/cc very valuable. 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? Flow object macros seem like they will be very nice syntactically. Can the flow object macro inspect the inherited characteristics in contexts other than characteristic specifications or do we still have to wait for first class modes for that?? Paul Prescod DSSSList info and archive: http://www.mulberrytech.com/dsssl/dssslist
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