Guides, tutorial, language reference, and design notes.
Comprehensive language guide: syntax, messages, objects, control flow, concurrency, and more.
View →A short, example-driven tour of Io for folks who already know how to program. Each section is a quick REPL session.
View →The original Io book, organized by chapter.
View →Browse every built-in object and method in Io's standard library.
View →How to write idiomatic Io — naming, formatting, comments, and the patterns used throughout the standard library.
View →How the Io VM is put together, and how to extend it from C.
View →Design docs on WASM targeting, stackless evaluation, and future work.
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