Variables and Types

Nubo provides a clean and expressive type system.

Declaring Variables

Use the let keyword:

let name = "Martin"
let age = 19
let isAdmin = true

Constants

Use const for immutable values:

const VERSION = "1.0.0"

Built-in Types

• int — whole numbers
• float — decimal numbers
• bool — true or false
• string — text values
• char — single character
• []T — list of items
• dict[K, V] — key-value storage
• fn(...) -> ... — function types
• struct — custom data types
• any — any type

Type Inference

Types are inferred when not specified:

let title = "Nubo" // string
let count = 5 // int

Type Annotations

Types can be explicitly defined:

let x: int = 5
let y: []string = ["a", "b"]

Structs

Custom types using struct:

struct User {
    name: string
    roles: []string
    data: dict[string, int]
}

Functions

Function types are first-class:

let add = fn(a: int, b: int) -> int {
    return a + b
}

Or:

fn add(a: int, b: int) -> int {
    return a + b
}