[racket-dev] 5.2.0.1: displayln appears to write to console from where drracket was launched

That sounds cool to me. Now that I think about it, I think we used to
have something like this (it was a mixin tied to a specific language,
not something that worked for all #lang languages) but it was back
before we had the macro system to support it, I think.

I imagine it would work as by having an alternative to "run" that
would just put you somehow into level 1.

Probably if it is possible, it is easy. :)

Robby

On Wed, Oct 19, 2011 at 4:17 PM, Matthias Felleisen
<matthias at ccs.neu.edu> wrote:
>
> The first step would be a compile-time IO console.
>
> The second step would be a compile-time interaction mode.
> This would fit right in with Ryan's past work. It would mean
> compile the Def Window (as in CS) and make for-syntax values
> available at the repl for experimentation. Then again, I might
> have had too much coffee :-)
>
>
>
>
> On Oct 19, 2011, at 5:13 PM, Robby Findler wrote:
>
>> With a REPL? That's a lot more than I had been thinking about. I'm not
>> sure how to do it, either.
>>
>> Robby
>>
>> On Wed, Oct 19, 2011 at 4:12 PM, Matthias Felleisen
>> <matthias at ccs.neu.edu> wrote:
>>>
>>> May I propose a compile-time interaction window in drracket? -- Matthias
>>>
>>>
>>>
>>> On Oct 19, 2011, at 5:08 PM, Robby Findler wrote:
>>>
>>>> Well, when you do IO at compile time there isn't really a good place
>>>> to put it (at least not at the moment) so instead of making a good
>>>> place to put it, I just let it go to drracket's stdout. Probably
>>>> reasonable to consider this a bug.
>>>>
>>>> Robby
>>>>
>>>> On Wed, Oct 19, 2011 at 4:06 PM, Matthias Felleisen
>>>> <matthias at ccs.neu.edu> wrote:
>>>>>
>>>>> Yeap, I have live CS running all the time. Interesting effect.
>>>>>
>>>>>
>>>>> On Oct 19, 2011, at 5:02 PM, Robby Findler wrote:
>>>>>
>>>>>> Probably when you were running check syntax? (Or maybe when it was
>>>>>> being run for you?)
>>>>>>
>>>>>> Robby
>>>>>>
>>>>>> On Wed, Oct 19, 2011 at 4:01 PM, Matthias Felleisen
>>>>>> <matthias at ccs.neu.edu> wrote:
>>>>>>>
>>>>>>> I am running the silly program below (no meaning), and on occasion I see the output of the *** line in the console from where I launched drracket. 5.2.0.1 from 10/16
>>>>>>>
>>>>>>>
>>>>>>> #lang racket
>>>>>>>
>>>>>>> (require (for-syntax syntax/parse))
>>>>>>>
>>>>>>> (define-for-syntax (postfix stx word stem)
>>>>>>>  (datum->syntax stx (string->symbol (string-append word "-" (symbol->string stem)))))
>>>>>>>
>>>>>>> (define-syntax (define-un-serialize stx)
>>>>>>>  (syntax-parse stx
>>>>>>>    [(_ name:id (argument:id ...) unparser:expr parser:expr)
>>>>>>>     (define serialize   (postfix stx "serialize"   (syntax-e #'name)))
>>>>>>>     (define deserialize (postfix stx "deserialize" (syntax-e #'name)))
>>>>>>>     (displayln `(,serialize ,deserialize)) ;; ****
>>>>>>>     #`(define-values (#,serialize #,deserialize)
>>>>>>>         (values (lambda (argument ...) unparser)
>>>>>>>                 (lambda (msg) parser)))]))
>>>>>>>
>>>>>>> (define-un-serialize f (x y) values values)
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>>>>>
>>>>>
>>>
>>>
>
>