I'm working on modernizing Rosetta Code's infrastructure. Starting with communications. Please accept this time-limited open invite to RC's Slack.. --Michael Mol (talk) 20:59, 30 May 2020 (UTC)

Capability:First class functions

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Capability:First class functions
Capabilities characterize abstract requirements of tasks and abilities of languages and libraries.
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First class functions are functions which can be used as data type. This enables to define higher order functions (functions operating on functions) and to store functions in variables (for languages providing mutable state).