Your "only remaining idea" is what I'd recommend for telling another place what function to run (that's how dynamic-place works in the first place). But your [details] sounds worrying. I just tested on my machine and it didn't happen for me, and I don't think it's supposed to happen on other platforms either.
Sam On Thu, Jul 1, 2021 at 2:36 PM David Storrs <[email protected]> wrote: > > What is the best way to pass a function into a child `place`? > > I've got a server function that accepts a dispatch function as one of its > arguments and I need to be able to run the server in a separate `place` (in > the dynamic-place sense) because it's part of a GUI application. [details] > > My initial thought was to start the place and then use > place-channel-(put/get) to move the run-time argument from the main place > over into the child. I immediately realized that doesn't work because > functions are not `place-message-allowed?` values. Next I thought about > using a parameter, but parameters in a child place are set to their *initial* > values, not their run-time values. (Barring a few special cases.) > > I considered passing a string or symbol list and then eval'ing it in the > child place. I immediately rejected this idea and told my brain that it was > being bad and it got no cookies. > > At this point my only remaining idea is to place-channel-(put/get) a module > name that can be dynamic-required in the child place in order to get the > dispatch function. Is there a better way? > > > [details] > The Racket GUI library has an issue where e.g. launching an 'Open File' > dialog will freeze all of Racket until the user closes the dialog. This can > cause the server to time out. Since it's all of Racket that's being frozen > and not just the current thread it's necessary to put the server code into an > entirely different `place`. > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-users/CAE8gKoemyTeoP2GW5-_h6rGxW_1YcfyCQfHSs9ee98h3pRE4mg%40mail.gmail.com. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/CAK%3DHD%2BYhymxGozm2VjBcSOLE7RSXY%3DzY7gPCrHqYQVPcFJEQ6Q%40mail.gmail.com.
