Faber - Programming language

Faber is an open source programming language created in 2026 by Ian Zepp.

#1551on PLDB

0Years Old

Download source code:

git clone https://github.com/faberlang/faber

Faber (Faber Romanus) is an experimental, statically typed language designed to be written by language models and read by people. Every operator is a single glyph with one meaning, types come before names, and failure is a typed second channel. The same analysed program can be rendered in several reader languages (English, Latin and others). A reference interpreter defines the semantics, and code generators emit Rust, Go, TypeScript, Swift, Python, C and LLVM IR, each measured against it. Experimental through version 1.x.

Tags: programming language
Faber is developed on GitHub
Faber compiles to Rust or Go or TypeScript or Swift or Python or C or LLVM IR or WebGPU Shading Language or Racket
Faber is written in Rust
Read more about Faber on the web: 1.

Example from the web:

fn greet(string name) → string {
    return "Salve, §!"(name)
}

fn divide(int a, int b) → int ⇥ string {
    if b ≡ 0 then throw "division by zero"
    return a / b
}

main {
    let list<string> names ← ["Ana", "Ben"]
    for from names let name {
        print greet(name)
    }
    print divide(7, 0) ⊥ -1
}

Language features

Feature	Supported	Example	Token
Exceptions	✓	fn divide(int a, int b) → int ⇥ string { if b ≡ 0 then throw "division by zero" return a / b }
Generics	✓	fn first(list items, T fallback) → T { return items.get(0) coalesce fallback }
Type Inference	✓	let _ answer ← 42
Static Typing	✓	fn add(int a, int b) → int { return a + b }
Functions	✓	fn add(int a, int b) → int { return a + b }
Integers	✓	let int answer ← 42
Line Comments	✓	# A comment	#
Comments	✓	# A comment
Strings	✓	"Hello world"	"
Print() Debugging	✓	print "Hello world"	print
Semantic Indentation	X