在 Clojure 中构建嵌套向量

Question

My goal is to build a nested vector of dimension n consisting of a single element p. As an example let me choose n=2 and p=1, so the output would be:

   [[1 1] [1 1]]

Answer 1

Probably, you want something like this:

(defn square-matrix [n p]
  (->> p (repeat n) (repeat n)))

Or, if you need vectors (not seqs):

(defn square-matrix [n p]
  (->> p (repeat n) vec (repeat n) vec))

Answer 2

我想你想要的是(->> p (repeat n) vec (repeat n) vec) 。

Answer 3

(defn vec-of-dim [n e]
  (->> (repeat n e)
       (into [])
       (repeat n)
       (into [])))