zena:option

zena

import {…} from 'zena:option';

Option type for representing optional values without null.

Option is a union of Some and None. Unlike T | null, Option works for all types including primitives, because Some is always a reference type (it boxes the value).

For performance-critical code where allocation matters, prefer multi-return (T, boolean) patterns instead.

Classes

Some

zena

class Some<T>

Represents a present value.

Constructors

zena

new(value: T)

Properties

zena

value: T

None

zena

class None

Represents an absent value.

Type aliases

Option

zena

type Option<T> = Some<T> | None

A value that is either present (Some) or absent (None).

Functions

some

zena

function some<T>(value: T): Option<T>

Creates a Some containing the given value.

Variables

none

zena

let none: None

The singleton None instance.