On Tuesday, June 17, 2014 8:16:36 PM UTC+2, Hussein B. wrote:
>
> Oh, this works
>
> (dosync (alter v #(update-in %1 [1] (fnil conj [ ]) %2) 33))
>
Not sure what %2 or 33 are doing there but you can skip the #() function,
alter (just like update-in) uses apply internally so you can just use:
(def v (ref {}))
(dosync (alter v update-in [1] (fnil conj []) 22))
=> {1 [22]}
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