effect-io-ai

Package: effect
Module: Array

Array.setHeadNonEmpty

Replaces the first element of a non-empty array with a new value.

When to use

Use when you already know the array is non-empty and the replacement value does not depend on the current first element.

Example (Setting the head)

import { Array } from "effect"

console.log(Array.setHeadNonEmpty([1, 2, 3], 10)) // [10, 2, 3]

See

• modifyHeadNonEmpty — transform the head with a function
• setLastNonEmpty — replace the last element

Signature

declare const setHeadNonEmpty: { <B>(b: B): <A>(self: NonEmptyReadonlyArray<A>) => NonEmptyArray<A | B>; <A, B>(self: NonEmptyReadonlyArray<A>, b: B): NonEmptyArray<A | B>; }

Source

Since v4.0.0