R is a very high-level language where all operations are functions and all functions are data that can be manipulated. This book shows you how to leverage R's natural flexibility in how function calls and expressions are evaluated, to create small domain-specific languages to extend R within the R language itself. 

 What You'll Learn

Find out about the anatomy of a function in R 

Look inside a function call

Work with R expressions and environments

Manipulate expressions in R

Use substitutions

 Who This Book Is For

Those with at least some experience with R and certainly for those with experience in other programming languages.