[racket-users] Racketfest talk videos now available

I'm pleased to announce that videos for the Racketfest talks are now available! https://racketfest.com/2019/proceedings There were four talks: + Shriram gave the opening keynote. Tons of insight into recent work on syntactic sugar, error messages, with a lot of historical wisdom thrown in

Re: [racket-users] macros and let/cc

> On Jun 2, 2019, at 7:13 PM, Matthias Felleisen wrote: > > > >> On Jun 2, 2019, at 9:41 PM, Kevin Forchione > > wrote: >> >> Hi guys, >> I’ve been working with macros and let/cc and have a situation where I have >> the 2nd macro bound to the let/cc return of the f

[racket-users] Avoiding needless work in `dynamic-wind` during downward jumps?

Is there any way for dynamic-wind to know about the context of the continuation being jumped to in order to skip doing useless work? To explain I mean and why I want such a thing, I have written some code that uses semaphores as mutexes, and most of my code acquires the mutex using call-with-se

Re: [racket-users] macros and let/cc

> On Jun 2, 2019, at 9:41 PM, Kevin Forchione wrote: > > Hi guys, > I’ve been working with macros and let/cc and have a situation where I have > the 2nd macro bound to the let/cc return of the first. No idea how I’d do > that, but here’s an example of what I’m attempting to do: > > #lang rac

[racket-users] macros and let/cc

Hi guys, I’ve been working with macros and let/cc and have a situation where I have the 2nd macro bound to the let/cc return of the first. No idea how I’d do that, but here’s an example of what I’m attempting to do: #lang racket (require (for-syntax racket/syntax)) (define-syntax (fn stx) (s