Clojure - meta


Advertisements

This function is used to see if any metadata is associated with an object.

Syntax

Following is the syntax.

(meta obj)

Parameters − ‘obj’ is the object which needs to be checked if any metadata is associated with it.

Return Value − Returns the metadata of obj, returns nil if there is no metadata.

Example

An example on how this is used is shown in the following program.

(ns clojure.examples.example
   (:gen-class))
(defn Example []
   (def my-map (with-meta [1 2 3] {:prop "values"}))
   (println (meta my-map)))
(Example)

Output

The above program produces the following output.

{:prop values}
clojure_metadata.htm
Advertisements