the guide
A friendly, progressive path from zero to productive — every example runnable in the browser. For exact semantics, see the Language Manual.
01 Introduction
Install, run, and the one promise.
02 Basics and Types
Bindings, 64-bit numbers, strings.
03 Control Flow
if, for, while, switch, defer.
04 Functions and Closures
Signatures, lambdas, defaults.
05 Data Structures
Structs, classes, records, enums.
06 Collections
Arrays, maps, sets, transforms.
07 Error Handling
Option, throws, try/catch.
08 Modules and Packages
Imports, stdlib, manifests.
09 Editor Setup
LSP and highlighting, rnx setup.
10 AI Assistants & MCP
Agents, harnesses, rnx mcp.
11 Troubleshooting & Reinstall
Diagnose, reinstall, uninstall.
Rosetta guides translate what you already know — every example shown side-by-side with Rasmalai.
15 minutes - systems engineers
Memory, engines, SIMD, ABI.
start here - newcomers
Zero to systems.
Lexicon and Structure
Encoding, comments, statements, keywords.
Prelude and Intrinsics
Implicit scope, root intrinsics, core types.
Numeric Model
Unified 64-bit semantics.
Bindings and Scope
let, const, shadowing, destructuring.
Full Language Manual
All seven normative sections.
Already know what you're looking for? Explore the Standard Library Reference