Io is a programming language focused on expressiveness through simplicity. All values are objects. All actions are messages. Code is a runtime modifiable tree.
Joined December 2008
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New Io programming language site and docs up — now targeting WASM/WASI. Work in progress. iolanguage.org/?launch
Io just pivoted to WebAssembly. One WASI binary runs everywhere, plus a browser REPL with a bidirectional Io JavaScript bridge. Still early-stage; expect sharp edges. Legacy native build preserved on the native branch.
github.com/IoLanguage/io
Io 2026.03.06-stackless-alpha:
Eval loop now runs on heap-allocated frames instead of C stack recursion. This enables portable coroutines and first-class continuations without platform-specific assembly, setjmp/longjmp or ucontext.
github.com/IoLanguage/io
iolanguage retweeted
I've created a @iolanguage (partial) implementation in javascript. what do you think? github.com/thenikso/tu
Experimental online Io REPL is up: iolanguage.org/repl/
Exmscripten was used to compile Io to WASM. Works on desktop, but there's bug on mobile browsers I haven't figured out yet. Any ideas?
Special event on the Smalltalk language (an inspiration for Io) at the Computer History Museum on Sep 1st: computerhistory.org/events/m…
Article: "Extending Io to add tuple unpacking" by Puitr Kilbert klibert.pl/posts/adding_dest…
iolanguage retweeted
Dan Ingalls' Smalltalk Zoo opens its gates:
computerhistory.org/blog/int…
Also, Dan's HOPL4 paper (linked from the article) is a must read for anyone interested in Smalltalk and the evolution of object technologies.
iolanguage retweeted
Day 9 completed using @iolanguage! Wasn't familiar with this language, but was reading up on Smalltalk and found io! This was the hardest one so far in terms of language, but very fun. Looking forward to doing more in io github.com/mrpapercut/advent… #AdventOfCode
