## 1.9 Conventions

Throughout this book I use f() to refer to functions, g to refer to variables and function parameters, and h/ to paths.

Larger code blocks intermingle input and output. Output is commented (#>) so that if you have an electronic version of the book, e.g., https://adv-r.hadley.nz/, you can easily copy and paste examples into R.

Many examples use random numbers. These are made reproducible by set.seed(1014), which is executed automatically at the start of each chapter.