Foobar vs Undefined - What's the difference?

foobar | undefined |


As a noun foobar

is (slang) a serious mistake.

As an adjective undefined is

lacking a definition or value.

foobar

English

(wikipedia foobar)

Noun

(-)
  • (slang) A serious mistake.
  • (computing) A metasyntactic variable name, a place holder for words; compare foo, bar.
  • 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