io-lang

Sample Io programming language programs.

Running with Docker (recommended)

Build the image once:

docker build -t io-lang .

Run any .io file:

bash run.sh helloWorld.io

Script compatibility

The Docker image builds a WASM (WASI) Io binary. Optional C addons such as Random and URL/Socket are not compiled in. Scripts that depend on those addons are noted below.

Script	Runnable	Notes
actors.io	✅
animals.io	✅
comparisonsAndCompounds.io	✅
controlStructures.io	✅
coroutine.io	✅
fibonacci.io	✅
guessingGame.io	✅	Uses Date-based seed (original Random addon unavailable)
helloWorld.io	✅
hw1.io	✅
lists.io	✅
lispML.io	✅
maps.io	✅
matrix.io	✅
messages.io	✅
myAverage.io	✅
operators.io	✅
phonebook.io	✅
singletons.io	✅
sum2DArray.io	✅
vehicles.io	✅
webFetch.io	⚠️	URL addon unavailable in WASM build; code is commented out with explanation
zeroDenominator.io	✅

Notes

Io now uses a WebAssembly (WASI) build system. The Docker image builds Io from source at github.com/IoLanguage/io using wasi-sdk and wasmtime. If the wasi-sdk release in the Dockerfile is outdated, update the version number to match the latest release at https://github.com/WebAssembly/wasi-sdk/releases.