Luma documentation
Language Basics

Language Basics

Everything you need to write Luma programs — from declaring variables to organizing code across files. Start with the syntax overview for a quick tour, then dive into the topics that interest you.

Syntax & Structure

Syntax Overview
A quick tour of Luma’s syntax and conventions
 Comments
Single-line and block comments
 Variables & Constants
Declaring values with type annotations and the lock keyword

Types

Data Types
Primitives, collections, optionals, and date/time types
 Type Inference
How Luma determines types when you don’t write them explicitly

Functions

Functions
Defining functions, parameters, return types, expression bodies, and recursion

Custom Types

Structs
Define your own data types with named fields
 Impl Blocks
Attach methods to structs
 Traits
Define shared behavior across different types

Code Organization

Modules & Imports
Split code across files and reuse it with imports
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