How to validate date (YYYYMMDD) using clojure

[pbi...@gmail.com]

I am java certified professional.Currently  I am working  Clojure I am still learning clojure.

I am trying to validate date ( YYYYMMDD) using clojure. Any one have idea how can I validate?

Thanks!

Bijay

[John Jacobsen]

Have a look at clj-time: https://github.com/clj-time/clj-time

In particular the clj-time.format namespace.

Cheers!

John

[bijay paudel]

I need to process Effective Date by reading the data.

At that case how I can do from clojure? Any idea please.

Logical Data Element: Term Effective Date

Required: YYYYMMDD

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[Didier]

Do it as you would in Java, using Clojure/Java interop.

If you paste the Java code for how you'd do it, we can help you convert it to Clojure interop code.

[bijay paudel]

Any idea how can I use in Clojure spec?

Thanks!

Bijay

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[Didier]

(defn valid-yyyymmdd?
  [date]
  ;; Here's the code that you would use in Java, but using Clojure interop, which needs to return true/false if valid.
  ;; So an example:
  (try (let [format (java.time.format.DateTimeFormatter/ofPattern "yyyyMMdd")]
         (java.time.LocalDate/parse date format)
         true)
       (catch java.time.format.DateTimeParseException e
         false)))

(s/def ::yyyymmdd valid-yyyymmdd?)

Now ::yyyymmdd is a spec for strings that formats as yyyyMMdd.

On Monday, 12 March 2018 19:04:43 UTC-7, bijay paudel wrote:

Any idea how can I use in Clojure spec?

Thanks!

Bijay

On Mon, Mar 12, 2018 at 9:02 PM, Didier <did...@gmail.com> wrote:

Do it as you would in Java, using Clojure/Java interop.

If you paste the Java code for how you'd do it, we can help you convert it to Clojure interop code.

On Monday, 12 March 2018 15:28:27 UTC-7, pbi...@gmail.com wrote:

I am java certified professional.Currently  I am working  Clojure I am still learning clojure.

I am trying to validate date ( YYYYMMDD) using clojure. Any one have idea how can I validate?

Thanks!

Bijay

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[number 23]

try re with clojure.core/re-matches

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