Book Image

Learn Red ? Fundamentals of Red

By : Ivo Balbaert
Book Image

Learn Red ? Fundamentals of Red

By: Ivo Balbaert

Overview of this book

A key problem of software development today is software bloat, where huge toolchains and development environments are needed in software coding and deployment. Red significantly reduces this bloat by offering a minimalist but complete toolchain. This is the first introductory book about it, and it will get you up and running with Red as quickly as possible. This book shows you how to write effective functions, reduce code redundancies, and improve code reuse. It will be helpful for new programmers who are starting out with Red to explore its wide and ever-growing package ecosystem and also for experienced developers who want to add Red to their skill set. The book presents the fundamentals of programming in Red and in-depth informative examples using a step-by-step approach. You will be taken through concepts and examples such as doing simple metaprogramming, functions, collections, GUI applications, and more. By the end of the book, you will be fully equipped to start your own projects in Red.
Table of Contents (13 chapters)


  1. Write the contents of the contacts series out to a contacts3.txt file with /lines. What is different now?
  2. Try out write/part with 20 as an argument. What does it do?
  3. write/seek %file new-text n (where n is a number) is used to replace the text in %file starting at position n+1. Try this out for the contacts series and replace John in the first item with Adam.
  4. Use save and load to store and read our contacts series in a file.
  5. Rewrite the appin function with a copy "" and call it several times to see the difference.
  6. Write a script to ask the user the currency and the format type she/he is interested in (XML or JSON). Here, you have to use the format, which doesn't use query string parameters. Try it out by obtaining data in JSON format. Hint: Use probe to see whether your URL is correct!