atomo

the programmer's programmable programming language

atomo is a small, simple, insanely flexible and expressive programming language. its design is inspired by Scheme (small, simple core), Slate (multiple dispatch, keywords), Ruby (very DSL-friendly), and Erlang (message-passing concurrency). it is written in and piggybacks on the Haskell runtime, permitting access to all of its power (and libraries!) through a thin layer.

laundry list

BSD licensed
small codebase
tiny core design, very consistent
multiple dispatch
prototype-based object-orientation
pattern-matching
dynamically typed
message-passing concurrency
haskell interface

examples

Greeter = Object clone
Greeter new: n :=
  Greeter clone do: {
    name = n
  }

(g: Greeter) say-hi :=
  (g name .. ": Hi!") print

(Greeter new: "Alex") say-hi

with-output-to: "out-file" do: {
  "Hello, world!" print
}

0 fib = 1
1 fib = 1
(n: Integer) fib :=
  (n - 2) fib + (n - 1) fib

[1, 2, 3] sum
(0 .. 5) map: @(* 2)
22.0 / 7.0