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.

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Learn Red ? Fundamentals of Red
Ivo Balbaert
May, 2018 | 252 pages
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Table of Contents (13 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
Red's Mission
Red's Mission
Technical requirements
A short history of Red
What makes Red special?
Red's main features
Summary
Questions
2
Setting Up for Development
Setting Up for Development
Technical requirements
Installing Red
Working interactively in the Red console
Running and compiling your first script
Other compilation options
Red's compilation model
Development environments for writing Red
Summary
Questions
3
Using Words, Values, and Types
Using Words, Values, and Types
Technical requirements
Understanding words and values
Some common datatypes
Using blocks and parens
Word bindings
More about types
Evaluating expressions and blocks
The structure of a Red program
Summary
Questions
Further reading
4
Code-Controlling Structures
Code-Controlling Structures
Technical requirements
Getting input from the user – input and ask
Testing conditions
Structuring repetitions
A number-guessing game
Handling errors
Creating and catching errors
Summary
Questions
5
Working with Series and Blocks
Working with Series and Blocks
Technical requirements
Series and blocks
Navigating and looping through a series
Getting information from a series
Changing a series
Copying a series
Strings as series
Summary
Questions
6
Using Functions and Objects
Using Functions and Objects
Technical requirements
A fauna of functions
Function attributes
Working with functions
Code is data and data is code
Using objects
Summary
Questions
7
Working with Files
Working with Files
Technical requirements
Selecting a file or folder
Working with file paths and directories
Reading and writing data files
Loading and saving files
Downloading currency exchange rates
Summary
Questions
8
Parsing Data
Parsing Data
Technical requirements
The bitset! datatype
Understanding how parse works
Searching, extracting, and changing
More features and examples
Summary
Questions
9
Composing Visual Interfaces
Composing Visual Interfaces
Technical requirements
Structuring an interface
A faces walkthrough
Events and actors
Basic contacts app
An introduction to the draw dialect
Summary
Questions
Further reading
10
Advanced Red
Advanced Red
Technical requirements
Reactive programming
Red/System
Interacting with the operating system
Datatypes for performance
Embedded Red and macros
Red for smart contract programming
Red's roadmap
Some useful references
Summary
Questions
Further reading
11
Assessments
Assessments
12
Other Books You May Enjoy
Other Books You May Enjoy
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Questions

  1. Give the results of the following statements. Do it in your head first, then verify it in the console:
      if 0 [print "0 is true"]
      if 13 = 13.0 [print "ok"]
      if 13 == 13.0 [print "ok"]
  1. What is the value of out after executing the following statements?
      p: 7
      out: either p == 7.0 ["p is 7"]["bad luck"]
  1. Write a code snippet that asks the user whether it is raining, and provide the appropriate whether or not it is raining. Use the multiline block style.
  2. Write a switch snippet where the values are of different datatypes—for example, use an item variable that has the "red" value and test on different values.
  3. Write a case snippet that tests whether a name word contains a vowel (a, e, i, o, or u). Hint: The conditions are of the form find name "a";, and so on. Look up an explanation...
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