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Advanced R, Second Edition (Chapman & Hall/CRC


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Table of Contents

Introduction Why R? Who should read this book What you will get out of this book What you will not learn Meta-techniques Recommended reading Getting help Acknowledgments Conventions Colophon I Foundations Introduction Names and values Introduction Binding basics Copy-on-modify Object size Modify-in-place Unbinding and the garbage collector Answers Vectors Introduction Atomic vectors Attributes S atomic vectors Lists Data frames and tibbles NULL Answers Subsetting Introduction Selecting multiple elements Selecting a single element Subsetting and assignment Applications Answers Control flow Introduction Choices Loops Answers Functions Introduction Function fundamentals Function composition Lexical scoping Lazy evaluation (dot-dot-dot) Exiting a function Function forms Quiz answers Environments Introduction Environment basics Recursing over environments Special environments The call stack As data structures Quiz answers Conditions Introduction Signalling conditions Ignoring conditions Handling conditions Custom conditions Applications Quiz answers II Functional programming Introduction
Functionals Introduction My first functional: map() Purrr style Map variants Reduce Predicate functionals Base functionals Function factories Introduction Factory fundamentals Graphical factories Statistical factories Function factories + functionals Function operators Introduction Existing function operators Case study: creating your own function operators III Object oriented programming Introduction Base types Introduction Base vs OO objects Base types S3 Introduction Basics Classes Generics and methods Object styles Inheritance Dispatch details R6 Introduction Classes and methods Controlling access Reference semantics Why R? S4 Introduction Basics Classes Generics and methods Method dispatch S and S Trade-offs Introduction S vs S R vs S IV Metaprogramming Introduction
Big picture Introduction Code is data Code is a tree Code can generate code Evaluation runs code Customising evaluation with functions Customising evaluation with data Quosures Expressions Introduction Abstract syntax trees Expressions Parsing and grammar Walking the AST with recursive functions Specialised data structures Quasiquotation Introduction Motivation Quoting Unquoting Non-quoting Dot-dot-dot () Case studies History Evaluation Introduction Evaluation basics Quosures Data masks Using tidy evaluation Base evaluation Translating R code Introduction HTML LaTeX V Techniques Introduction
Debugging Introduction Overall approach Locate the error The interactive debugger Non-interactive debugging Non-error failures Measuring performance Introduction Profiling Microbenchmarking Improving performance Introduction Code organisation Check for existing solutions Do as little as possible Vectorise Avoid copies Case study: t-test Other techniques Rewriting R code in C++ Introduction Getting started with C++ Other classes Missing values The STL Case studies Using Rcpp in a package Learning more Acknowledgments

About the Author

Hadley Wickham is Chief Scientist at RStudio, an Adjunct Professor at Stanford University and the University of Auckland, and a member of the R Foundation. He is the lead developer of the tidyverse, a collection of R packages, including ggplot2 and dplyr, designed to support data science. He is also the author of R for Data Science (with Garrett Grolemund), R Packages, and ggplot2: elegant graphics for data analysis.

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