On Jun 1, 2014, at 1:18 PM, Charles Hixson <charleshi...@earthlink.net> wrote:
> I'm contemplating implementing a program in Racket, but it involves > different processes sending messages to each other, so I need to be able > to check for the presence of a message without brining everything to a > halt. In Python I'd do this using a Queue. Is there something similar > in Racket? The documentation just says that get is a blocking call, but > if there's a way to check for the presence of a message it doesn't seem > to mention it. Sure… it depends on whether you want the ‘put’ to block. If so, then you can use sync/timeout on the channel to see if there’s a message available. You might also be looking for an actual queue, so that neither side blocks. In this case, you can probably set up a loop on the receiving side that just dumps the events into an asynchronous queue; this shouldn’t be more than three lines of code. John John Clements ____________________ Racket Users list: http://lists.racket-lang.org/users
