Source code
What is Io? Example Code Quick Links Platform Building Running Browser REPL Running Tests Extending Io Io targets WebAssembly. A single WASI binary runs under any WASI host (wasmtime, Node, browsers via WASI shims) and ships with a browser REPL and a bidirectional Io↔JavaScript bridge. If you need the previous native build (CMake, dynamic addons, Eerie package manager), use the native branch or the 2026.04.20-native-final tag. The native path accepts bug fixes; new development lands on master . make Build build/bin/io static (WASI CLI binary) make test Build build/bin/test iterative eval make check Run both test suites under wasmtime make browser Build browser/io browser.wasm (browser REPL) make serve Serve the browser REPL at make check-browser Run browser tests under Playwright make regenerate Regenerate IoVMInit.c from .io sources make clean Remove build artifacts Run a script (pass --dir=. so the WASI sandbox can read the file): Then open . See browser/README.md for details on embedding the REPL in a page and calling between Io and JavaScript. The native addon system ( DynLib , AddonLoader , Eerie) is not available on WebAssembly. Host integration goes through the JavaScript bridge instead: Io code can call JS functions, and JS can call Io methods. See browser/README.md and agents/wasm/Bridge.md .
Excerpt from the source-code README · 4,164 chars · not written by Vinony
Wikidata facts
- Instance of
- programming language
- Official website
- iolanguage.org
Show 6 more facts
- Stack Exchange tag
- stackoverflow.com/tags/iolanguage
- inception
- 2002-01-01
- programming paradigm
- object-oriented programming
- typing discipline
- strong typing
- source code repository URL
- github.com/IoLanguage/io
- copyright license
- 3-clause BSD License
Sources (2)
via Wikidata · CC0
Article · Deutsch
Io ist eine kompakte Prototypen-basierte, objektorientierte Programmiersprache. Der Erfinder und Hauptentwickler, der Amerikaner Steve Dekorte, legt bei der Entwicklung großen Wert auf Minimalismus, sowohl was die Codegröße als auch die Komplexität der Syntax und den Speicherverbrauch angeht. Das spiegelt sich auch im Motto der Sprache Io – less is more wider. In Io gilt stärker als in anderen Programmiersprachen: „Alles ist ein Objekt“. Die Sprache wurde hauptsächlich von Smalltalk (alle Werte sind Objekte), Self, NewtonScript, (Prototypen-basierte Vererbung, Actors und Zugriff), Lisp (Code zur Laufzeit betracht- und modifizierbar) und Lua (kompakt, einbettbar) inspiriert.
Abstract from DBpedia / Wikipedia · CC BY-SA