- Rewrite download-rates in currency-rates-gui.red so that it accepts the code and date as parameters.
- Print out the internal structure of a button object to the Red console. Notice that button has a window parent face.
- You can code a button to close its window by using the quit or the unview word in its action facet. Try both out. Note that unview/all is used when there are multiple windows to close.
- Create a window that displays square base faces with different colors, such as base yellow 25x25. Try out several of the layout commands.
- Make a window with a button and a checkbox. Change the state and text of the checkbox with a click on the button. After three clicks, disable that button (hint: use face/enabled? for that).
- Make a window that displays the data values of a series sorted in a text-list. You can do this in two ways—with a button action, or with a...
Learn Red ? Fundamentals of Red
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Learn Red ? Fundamentals of Red
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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)
Preface
Free Chapter
Red's Mission
Setting Up for Development
Using Words, Values, and Types
Code-Controlling Structures
Working with Series and Blocks
Using Functions and Objects
Working with Files
Parsing Data
Composing Visual Interfaces
Advanced Red
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