Don't you need to supply a combiner for fold? /no-experience
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Hi Caleb,
This surprised me as well. It seems that if you try to fold a map, the
function has two arguments:
(r/fold + (r/map (fn [k v] v) {:a 1 :b 2})) ;; works
(r/reduce + (r/map (fn [k v] v) {:a 1 :b 2})) ;; doesn't work
(r/reduce + (r/map (fn [[k v]] v) {:a 1 :b 2})) ;; works
(r/
Hi everyone,
Let d be some map, says {1 3/5, 2 1/5, 3 1/5}
why
(reduce + (map #(% 1) d)) => 1
while
(fold + (map #(% 1) d)) => ArityException Wrong number of args (2) passed to
The reduce,fold, and map are those in the reducers namespace.
Can someone explain to me? Thanks
-
Caleb
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You r
