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)

More features and examples

The parse dialect has a lot more useful features and functionalities. In this section, we discuss some more examples, so that you get a feeling for what is possible.

Using end

Remember our vowels example from The bitset! datatype section?

;-- see Chapter08/
charset "aeiou"
str: "dog"
find str vowel ;== "og"

Using parse we can write this as follows:

parse str [ to vowel to end]    ;== true
parse "xyz" [ to vowel to end] ;== false

The end word, which exists only in the parse dialect, returns true when the current position pointer is at the end of the input.