fn (IPA: /ɛfɛn/) is a functional programming language, a dialect of Lisp built on top of the Go programming language.
fn is still in design phase.
Install the CLI interpreter and feed it with some examples:
go get github.com/xiam/fnlang/cmd/fn
fn < _examples/001-hello-world.fn
# Hello world!
# [[:nil]]
cat _examples/003-square.fn
# (defn square [x] (* x x))
# (square 10)
# (square 100)
fn < _examples/003-square.fn
# [[:true 100 10000 1000000]]Please note that the CLI is still very rudimentary and it doesn't offer any REPL capabilities yet:
echo '(* 34 4 2 3 5 6)' | fn
# [[24480]]
echo '(- 12 34 (+ 3 4 5))' | fn
# [[-34]]
echo '(defn foo [x] [(echo x)]) (foo "hello world!")' | fn
# [[:true ["hello world!"]]](defn fib [n]
(when
(= n 0) 0
(= n 1) 1
:true (+ (fib (- n 1)) (fib (- n 2)))
)
)
(fib 0)
(fib 1)
(fib 2)
(fib 3)
(fib 4)
(fib 5)
(fib 6)[[:true 0 1 1 2 3 5 8]]
This project is licensed under the terms of the MIT License.
Copyright (c) 2019-present. José Nieto. All rights reserved.
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