Beginning C++23: From Beginner to Pro

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

I. Horton, P. Van WeertBeginning C++23https://doi.org/10.1007/978-1-4842-9343-0_19

19. First-Class Functions

Ivor Horton¹   and Peter Van Weert²

(1)

Stratford-upon-Avon, Warwickshire, UK

(2)

Kessel-Lo, Belgium

 

C++ has economy-class functions, business-class functions, and first-class functions, all with varying degrees of comfort, space, privacy, and onboard service… No, of course that’s not what the term first-class means.¹ Let’s start over.

In computer science, a programming language is said to offer first-class functions if it allows you to treat functions like any other variable. In such a language, for instance, you can assign a function as a value to a ...