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About Red

Red [
	Title: {Random dog viewer}
	Author: "loziniak"
	Needs: View

view [
	img: base 150x150
	button "Dog photo" [
		dog-data: load-json read https://api.thedogapi.com/v1/images/search?size=thumb
		img/image: load to-url dog-data/1/url

41 coding exercises for Red on Exercism. From Anagram to RNA Transcription.

Get better at programming through fun, rewarding coding exercises that test your understanding of concepts with Exercism.

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Key Features of Red



Red can be used to create a device driver as well as a GUI application.


Entire toolchain is about 1.5 MB download, single executable. Low memory footprint.

Code is data

Red is its own meta-language and own data-format. Program can operate on it's own code.


It's easy to create Domain Specific Languages, dialects and parsers.


It's simple as: view [b: base 100x100 button {Draw circle} [b/draw: [pen red circle 50x50 50]]]


Objects can be linked by reactions to reduce size and complexity of program.

Get mentored the Red way

Every language has its own way of doing things. Red is no different. Our mentors will help you learn to think like a Red developer and how to write idiomatic code in Red. Once you've solved an exercise, submit it to our volunteer team, and they'll give you hints, ideas, and feedback on how to make it feel more like what you'd normally see in Red - they'll help you discover the things you don't know that you don't know.

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Community-sourced Red exercises

The Red track on Exercism has 41 exercises to help you write better code. Discover new exercises as you progress and get engrossed in learning new concepts and improving the way you currently write.

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The best part, it’s 100% free for everyone.