Clojurians Log v2
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missionary 2024-11-26
Dallas Surewood 2024-11-26T04:08:02.397129Z
Was reading https://nextjournal.com/N-litened/missionary-for-dummies And was confused by one example. Is this not unnecessary to use m/sp and m/? to park each sleep? Doesn't m/join already park the sleeps implicitly?
(m/? ;; The outer m/? is here just to force the m/sp to actually run. This one blocks.
(m/join vector
;; all five question marks below run "in parallel" on a single thread, they park their
;; parent tasks (generated by m/sp) instead of blocking our thread from doing anything
(m/sp (m/? (m/sleep 1000 :how)))
(m/sp (m/? (m/sleep 1000 :do)))
(m/sp (m/? (m/sleep 1000 :you)))
(m/sp (m/? (m/sleep 1000 :like)))
(m/sp (m/? (m/sleep 1000 :this?)))))
Yep, you're right. This was an example of how it's possible to nest m/? inside m/sp, as opposed to a similar example right above it which does the same thing but without m/sp and m/? — I agree that I should expand the explanation to make it less confusing 🙏
xificurC 2024-11-26T07:09:15.236779Z
indeed, (m/sp (m/? x)) is just x