Functional Programming in R

Advanced Statistical Programming for Data Science, Analysis and Finance

  • Thomas Mailund

Table of contents

  1. Front Matter
    Pages i-xv
  2. Thomas Mailund
    Pages 1-23
  3. Thomas Mailund
    Pages 25-41
  4. Thomas Mailund
    Pages 43-61
  5. Thomas Mailund
    Pages 63-76
  6. Thomas Mailund
    Pages 77-93
  7. Thomas Mailund
    Pages 95-99
  8. Back Matter
    Pages 101-104

About this book


Master functions and discover how to write functional programs in R. In this book, you'll make your functions pure by avoiding side-effects; you’ll write functions that manipulate other functions, and you’ll construct complex functions using simpler functions as building blocks.

In Functional Programming in R, you’ll see how we can replace loops, which can have side-effects, with recursive functions that can more easily avoid them. In addition, the book covers why you shouldn't use recursion when loops are more efficient and how you can get the best of both worlds.

Functional programming is a style of programming, like object-oriented programming, but one that focuses on data transformations and calculations rather than objects and state. Where in object-oriented programming you model your programs by describing which states an object can be in and how methods will reveal or modify that state, in functional programming you model programs by describing how functions translate input data to output data. Functions themselves are considered to be data you can manipulate and much of the strength of functional programming comes from manipulating functions; that is, building more complex functions by combining simpler functions.

You will:
  • Write functions in R including infix operators and replacement functions 
  • Create higher order functions
  • Pass functions to other functions and start using functions as data you can manipulate
  • Use Filer, Map and Reduce functions to express the intent behind code clearly and safely
  • Build new functions from existing functions without necessarily writing any new functions, using point-free programming
  • Create functions that carry data along with them


functional R programming language CS computer code software

Authors and affiliations

  • Thomas Mailund
    • 1
  1. 1.Aarhus NDenmark

Bibliographic information

Industry Sectors
Finance, Business & Banking
IT & Software
Consumer Packaged Goods
Oil, Gas & Geosciences