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Foobar - Wikipedia

Foobar

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The terms foobar,1 foo, bar, baz, quux,2 and others are used as metasyntactic variables in computer programming or computer-related documentation.34 They have been used to name entities such as variables, functions, and commands whose exact identity is unimportant and serve only to demonstrate a concept.

Printed 2026-06-28.

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Footnotes

  1. /ˈfuːbɑːr/ ↩

  2. /kwʌks/, regardless of length. Can be extended as quu(u…)x for n desired variables; this includes the (more modern) backwards extrapolation qux. ↩

  3. Eric S. Raymond (ed.). “metasyntactic variable”. Jargon File. 4.4.8. Retrieved 2024-05-30. ↩

  4. RFC 3092 - Etymology of “Foo” ↩

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