clojure.core/uuid?

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Type: function Added: Clojure 1.9 Examples: 3 Runnable: 0

([x])

Return true if x is a java.util.UUID

Examples

by svenschoenung on 2017-05-28 . May have evaluation errors. ▶

(uuid? (java.util.UUID/randomUUID)) ;;=> true (uuid? (read-string "#uuid \"f81d4fae-7dec-11d0-a765-00a0c91e6bf6\"")) ;;=> true (uuid? "f81d4fae-7dec-11d0-a765-00a0c91e6bf6") ;;=> false

by timgilbert on 2018-05-30 . May have evaluation errors. ▶

;; If using a version of Clojure >= 1.11 use `parse-uuid` (def new-u (parse-uuid "4fe5d828-6444-11e8-8222-720007e40350")) ;;=> #'user/new-u new-u ;;=> #uuid "4fe5d828-6444-11e8-8222-720007e40350" (uuid? new-u) ;;=> true ;; There is no (uuid) function to coerce a string to a UUID prior to Clojure v1.11, ;; but you can produce one via Java interop: (def old-u (java.util.UUID/fromString "4fe5d828-6444-11e8-8222-720007e40350")) ;;=> #'user/old-u old-u ;;=> #uuid "4fe5d828-6444-11e8-8222-720007e40350" (uuid? old-u) ;;=> true

by ashton314 on 2018-10-12 . May have evaluation errors. ▶

;; Change a UUID to a string: (.toString (java.util.UUID/randomUUID)) ;;=>"91bb281c-4cdd-4bea-bd9c-27b5f9c75812"

Note by E-A-Griffin

;; Docs for added UUID functions in Clojure 1.11

parse-uuid: https://clojure.github.io/clojure/clojure.core-api.html#clojure.core/parse-uuid

random-uuid: https://clojure.github.io/clojure/clojure.core-api.html#clojure.core/random-uuid

See also

• clojure.core/random-uuid
• clojure.core/parse-uuid

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