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Validation vs Undefined - What's the difference?

validation | undefined |

As a noun validation

is the act of validating something.

As an adjective undefined is

lacking a definition or value.

validation

English

Noun

  • The act of validating something.
  • Something, such as a certificate, that validates something; attestation, authentication, confirmation, proof or verification.
  • The process whereby others confirm the validity of one's emotions.

    • undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined