Clojure从地图向量中提取值

Question

Is there a way to extract all the values from a vector of maps?

(def vector-of-maps [{:a 1 :b 2} {:a 3 :b 4}])

Because

(vals vector-of-maps)

doesn't work of course.

I am trying to apply a function on every map in a vector, therefore I need every map, ie. {:a 1 :b 2}, and then {:a 3 :b 4}

Answer 1

尝试这个：

(mapcat vals vector-of-maps)

Answer 2

This would do. Because maps are not ordered, you might see the values in different order than in the literal map representation:

(mapcat vals vector-of-maps)