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First-Class Citizen ○꠹｜Definition｜1st｜20261013192254-00-⌔

First-class citizen - Wikipedia

First-class citizen

In a given programming language design, a first-class citizen1 is an entity which supports all the operations generally available to other entities. These operations typically include being passed as an argument, returned from a function, and assigned to a variable.2

Printed 2026-10-13.

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Footnotes

  1. Also known as first-class type, first-class entity, first-class object, or first-class value. ↩

  2. Scott, Michael (2006). Programming Language Pragmatics. San Francisco, CA: Morgan Kaufmann Publishers. p. 140. ISBN 9780126339512. ↩

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