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Beans

Beans

A small object-oriented systems language with predictable memory, no null, no exceptions, and direct systems access.

What is Beans?

Section titled “What is Beans?”

Beans is a small object-oriented systems language built to be both exact and low-level — as comfortable with accounting and billing as with databases and operating systems. Files end in .b.

It has classes, interfaces, and inheritance with reference semantics; a small grammar; exact decimal arithmetic; no null and no exceptions, only Option and Result; deterministic object lifetimes with no garbage-collector pauses; and a low-level unsafe layer for raw memory and C interop. One compiler, beansc, checks your program and either runs it on a reference interpreter or compiles it to a native binary through LLVM.

import std.io


fn main() {
    let name: string = "beans"
    io.println("hello from {name}")
}

Small and explicit

Every name states its type. There is no null and no exceptions: missing values are Option, failures are Result. The grammar is small.

Predictable memory

Automatic reference counting with a cycle collector. There is no tracing garbage collector, so the straight-line path has no pauses, and destructors run deterministically.

Systems access

Files, sockets, threads, atomics, SIMD, shared memory, dynamic libraries, and a full C ABI, all through the standard library.

One command

beansc is the checker, interpreter, native backend, package manager, language server, and debugger. One command installs it.