Clojure哈希图查询键和值

Question

I am trying to use a hash-map within closure as i have a for loop that passes in a sorted string and an un-sorted string to my function, what i want to do is two if statements on the hash-map

1st if statement is

if hash-map doesnt contain string "x"
put x in a new hash-set

2nd if statement is

if hash-map key "x" value is not equal to "y"
remove "x" from hash-set

This is what i have so far

(defn transform3 [y]
 (let [x (sort-string (str/lower-case y))
    my-hash-map (hash-map)
    hashmap2 (hash-map)]
(if-not (contains? my-hash-map x)
  (my-hash-map x, y)
  (hashmap2 y))

(if-not (get hash-map x) y)
(dissoc hashmap2 x)

;;remove from hash-set to do...
))

How would i do if statement that would allow me to use things like "get" "contains" "put" etc...??

Answer 1

hash-map is a function. When you call it (using the parens) it returns an actual hash-map. I have altered your code to get past that particular error message.

(defn add-to-map [y]
  (let [x (sort-string (str/lower-case y))
        my-hash-map (hash-map)]
    (if-not (contains? my-hash-map x)
     (hash-map x, y)
      (hash-set y))
    (if-not (get hash-map x) y)
      ;;remove from hash-set to do...
      ))