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[plt-scheme] Re: webserver and print-struct
Paul Graunke wrote:
> Check help-desk for print-convert. You might get it to do what you
> need with the right hooks installed (current-print-convert-hook
> [hook]).
This is quite clever. I will add it to the good old bag'o'tricks.
But - I still have problems now. I end up with stuff like this in output
file
(quasiquote ((unquote #<struct:entry>) (unquote #<struct:entry>)))
The #<struct:entry> ought to be (make-struct ..)-thingies.
Now the behaviour in DrScheme and in the web-server are not the same.
It has proably something to do with language settings or parametrizations.
Reading the manual the solution ought to be to use (print-struct #t),
but for some reason the web-server does not respect it.
(Or at least: that's way it seems - I could have missed something)
My functions are
(define (load-book)
(let* ([port (open-input-file filnavn)]
[book (eval (read port))])
(close-input-port port)
(map convert-entry book)))
(define (save-book)
(let ([port (open-output-file filename 'replace)])
; (print-struct #t)
(write (print-convert book) port)
; (pretty-print (print-convert bog) port) ; this is no better
(close-output-port port)))
[ The pconvert.ss documentation has a small bug:
"In addition to print-convert, this library provides print-convert, ...
" ]
--
Jens Axel Søgaard