What is the map-invert method in Clojure maps?
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What is a map in Clojure?
A map is a collection that assigns keys to values.
What is a map-invert map method in Clojure?
The map-invert method is used to turn keys to values and values to keys in a map.
Syntax
(map-invert hmap)
Parameter
The map-invert method receives one parameter:
hmap: The map we are working with.
Return value
The map-invertmethod returns an inverted map.
Example
(ns clojure.examples.example(:require [clojure.set :as set])(:gen-class))(defn invert [](def example (hash-map "z" "98" "x" "90" "u" "53"))(println (set/map-invert example)))(invert)
Explanation
Notice how in the code above the output now has an inverted map.
Line 2: We include the set package like so;(:require [clojure.set :as set])
Lines 3–4: We define the function invert.
In line 5: We use the keyword def to define a variable example and we assign our map to it.
In line 6: We use the map-invert method to invert the map example keys and values using the method as; (set/map-invert example)
In line 7: We call the invert function.
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