R objects exist within an object system. R currently uses three object systems: S3, S4, and Reference Class. S3, S4, and Reference Class are all object-oriented systems. S3 is the simplest with informal classes. S4 is a newer system and uses formal classes that are associated with methods. Reference Class uses formal classes that are associated with both methods and environments. The three versions run concurrently in R. The writers at CRAN say ...
© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022
M. TollefsonR 4 Quick Syntax Referencehttps://doi.org/10.1007/978-1-4842-7924-3_44. Types and Modes of Objects
Margot Tollefson1
(1)
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