Start

Try it in the browser

Open the playground, type (21, 2) /o/add and press Run; it answers : 23. Nothing to install: the machine is in the page, and the boxes on the front page are the same machine.

Install the command line

Needs a C compiler, make and git.

git clone --recursive https://github.com/asomadev/o.se
cd o.se && make

In the workspace, the same host is hosts/unix.o.se:

cd hosts/unix.o.se && make

A first program

Start a prompt and type a line:

./o.se -f o.se.osen/osen.ose

> (21, 2) /o/add
: 23

The leading colon marks a message with no address: a bare result. Name it, and read it back:

> /x : (21, 2) /o/add, /x
: 23

Where next

• Language — the tour, every example a live box; then the grammar and the reference.
• Hosts — the same machine inside Max, a browser, a board and Python.
• Examples — small complete programs, and moving one between hosts.
• Overview — the words: messages and bundles, the machine and its registers, the two languages.