[r6rs-discuss] [Formal] file-opens should be a procedure
sperber at informatik.uni-tuebingen.de
Thu Oct 5 07:42:59 EDT 2006
John Cowan <cowan at ccil.org> writes:
> Michael Sperber scripsit:
>> Did you see that a `file-options' evaluates to an enum-set? That
>> makes it possible to construct a file-options object from a list of
>> symbols, for example. The `file-options' form is convenience syntax
>> for the (by-far most) common case, and the bootstrap to get you into
>> the appropriate enum set, where all kinds of kung fu are available.
> Ah. Request withdrawn in favor of providing an example of this usage.
You mean like this?
(define (list->file-options l)
((enum-set-constructor (file-options)) l))
(Untested, but you get the idea.)
Cheers =8-} Mike
Friede, Völkerverständigung und überhaupt blabla
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