Abstract
A “pure” function is a function that behaves like a mathematical function: it maps values from one space to another, the same value always maps to the same result, and there is no such thing as “side effects” in a mathematical function.
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Mailund, T. (2023). Pure Functional Programming. In: Functional Programming in R 4. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-9487-1_3
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DOI: https://doi.org/10.1007/978-1-4842-9487-1_3
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