[racket] plot-frame does not wait at end of process

There is a tension here, but I actually think Racket's default strategy is
the best one (Matthew and I have discussed this a fair amount way back when
we were first getting GUI stuff going in Racket; Java's strategy is
different and leads to race-conditions easily, for example.).

So if plot's function were just something like:

  (define (plot-frmae the-args)
    (define f (new frame% ...))
    ..put stuff in frame..
    (send f show #t))

Then just hitting run in DrRacket would show you the multiple plots in
separate frames fine. At the command-line if you script was

#lang racket
(require plot)
(plot-frame ...)
(plot-frame ...)
(plot-frame ...)

then that would also work fine (not exiting until you closed all the
windows).

I can't recall anymore the use-case that let Neil to what he's done here,
so we probably should revisit that.

Robby


On Mon, Mar 11, 2013 at 1:41 PM, Jay McCarthy <jay.mccarthy at gmail.com>wrote:

> I like the current behavior because I often render multiple plots and
> want to see them all at the same time.
>
> Jay
>
> On Mon, Mar 11, 2013 at 6:37 AM, Eli Barzilay <eli at barzilay.org> wrote:
> > Just now, Robby Findler wrote:
> >> Neil has done this intentionally (making plot-frame create its own
> >> eventspace).
> >
> > Yes, I know.  And it even started from a similar use case of a quick
> > progran that shows a plot.  IMO, it is the wrong fix, because it
> > forces the non-trivial sync line.  It would be much better if the
> > plotting itself would do the waiting (and maybe not even do the new
> > namespace), at least by default.
> >
> >
> >
> >> On Mon, Mar 11, 2013 at 7:26 AM, Eli Barzilay <eli at barzilay.org> wrote:
> >>
> >>     Three hours ago, Laurent wrote:
> >>     > On Mon, Mar 11, 2013 at 10:12 AM, Danny Yoo <
> dyoo at hashcollision.org>
> >>     wrote:
> >>     >
> >>     >     (sync (send f get-eventspace))
> >>     >
> >>     > Thanks Danny, exactly what I need!
> >>     > (I had forgotten `sync' and `get-eventspace' could be combined...)
> >>
> >>     Since this is not the first time it comes up -- Neil: How about
> fixing
> >>     this?
> >>
> >>     --
> >>               ((lambda (x) (x x)) (lambda (x) (x x)))          Eli
> Barzilay:
> >>                         http://barzilay.org/                   Maze is
> Life!
> >>     ____________________
> >>       Racket Users list:
> >>       http://lists.racket-lang.org/users
> >>
> >
> > --
> >           ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
> >                     http://barzilay.org/                   Maze is Life!
> >
> > ____________________
> >   Racket Users list:
> >   http://lists.racket-lang.org/users
>
>
>
> --
> Jay McCarthy <jay at cs.byu.edu>
> Assistant Professor / Brigham Young University
> http://faculty.cs.byu.edu/~jay
>
> "The glory of God is Intelligence" - D&C 93
>
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