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Re: Accessor visibility
Andre van Tonder <andre@xxxxxxxxxxxxxxxxx> writes:
> Just a small question: Are the accessors visible in the protocol <exp>?
Yes. This is implied by the fact that the accessors are defined in
the environment of the DEFINE-RECORD-TYPE form.
We actually spent a fair amount of time on the wording spelling out
how the names are bound---i.e. that DEFINE-RECORD-TYPE expands into a
bunch of DEFINEs without saying that it expands into a bunch of
DEFINEs. If you could suggest on how to improve the spec, that would
be a great help.
> Here is an example that would use this to copy a record.
> (define-record-type point
> (lambda (new)
> ((x y) (new x y)) ; Create new
> ((old-point) (new (point-x old-point) ; Copy existing
> (point-y old-point)))))
> (fields (immutable x)
> (immutable y)))
Are you actually asking if we can "do C++" with SRFI 76? :-)
Cheers =8-} Mike
Friede, Völkerverständigung und überhaupt blabla