Turn your R code into packages that others can easily download and use. This practical book shows you how to bundle reusable R functions, sample data, and documentation together by applying author Hadley Wickham’s package development philosophy. In the process, you’ll work with devtools, roxygen, and testthat, a set of R...

Technology alone can be intimidating, and the printed documentation and online support that come with a new smartphone can be just as baffling. Thankfully, Samsung Galaxy S 7 For Dummies is here to give you easy-to-follow guidance on all the features...

• This step-by-step guide will would demonstrate all the important design patterns in practice
• This book is the only documentation on the market focusing on design patterns in TypeScript
• This book is packed with rich examples that will improve...

Packed with hands-on labs to reinforce what you're learning, Learn PowerShell Toolmaking in a Month of Lunches is the best way to learn PowerShell scripting and toolmaking. Just set aside one hour a day—lunchtime would be perfect—for each self-contained lesson. You'll move quickly...