What's 8sync?
8sync (pronounced "eight-sync") is an asynchronous programming library for GNU Guile. It makes use of delimited continuations to avoid a mess of callbacks resulting in clean, easy to read non-blocking code.
(define (site-user-view request db-conn)
"Display a list of all users registered on this site"
(htmlize-response
(list-users-template
#:request request
;; Wrapping in 8sync "suspends" this function, running
;; fetch-active-users asynchronously, and "wakes up" the function
;; when ready, seamlessly passing back its result.
#:users (8sync
(fetch-active-users db-conn)))