into

(into to from)

将from-coll中的所有元素合并至to-coll并返回结果

user=> (into (sorted-map) [ [:a 1] [:c 3] [:b 2] ] )
{:a 1, :b 2, :c 3}
user=> (into (sorted-map) [ {:a 1} {:c 3} {:b 2} ] )
{:a 1, :b 2, :c 3}

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