Abstract
In C++ you have 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. Let’s start over:
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The term does have a somewhat similar origin. In the 1960s, Christopher Strachey (the same computer language pioneer who first formalized the concepts of lvalues and rvalues, by the way) coined the term when he labeled procedures (functions) as second-class citizens in the programming language ALGOL: “They always have to appear in person and can never be represented by a variable or expression….”
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© 2020 Ivor Horton and Peter Van Weert
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Horton, I., Van Weert, P. (2020). First-Class Functions. In: Beginning C++20. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-5884-2_19
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DOI: https://doi.org/10.1007/978-1-4842-5884-2_19
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Publisher Name: Apress, Berkeley, CA
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Online ISBN: 978-1-4842-5884-2
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