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missionary
J 2025-02-04T16:29:33.266749Z
Hi guys!
In m/join , can the function have little side effect (like swap! an atom). For example:
(m/join
(fn [a b c]
(swap! ... a b c)
{:a a :b b :c c})
...)
leonoel 2025-02-04T16:31:16.747669Z
yes, as long as it returns quickly
đź‘Ť 1
2025-02-07T18:40:26.111589Z
I've been wondering about this, also in the docs it mentions being quick. But what are the implications of not being quick?
leonoel 2025-02-07T19:03:32.238339Z
it will block the progression of everything that depends on this event
2025-02-07T19:04:35.987309Z
Thank you, that’s good to know and makes sense.
leonoel 2025-02-07T19:13:36.895669Z
the function may be called from a thread that's not supposed to perform blocking IO, like an event handler or a cpu-bound pool