effect-io-ai

Package: effect
Module: Iterable

Iterable.contains

Checks whether an iterable contains a value using Effect’s default Equal equivalence.

Details

Can be called as contains(self, value) or curried as contains(value)(self).

Example (Checking membership)

import { Iterable } from "effect"

const numbers = [1, 2, 3, 4, 5]
console.log(Iterable.contains(numbers, 3)) // true
console.log(Iterable.contains(numbers, 6)) // false

const letters = "hello"
console.log(Iterable.contains(letters, "l")) // true
console.log(Iterable.contains(letters, "x")) // false

// Works with any iterable
const range = Iterable.range(1, 100)
console.log(Iterable.contains(range, 50)) // true
console.log(Iterable.contains(range, 150)) // false

// Curried version
const containsThree = Iterable.contains(3)
console.log(containsThree([1, 2, 3])) // true
console.log(containsThree([4, 5, 6])) // false

Signature

declare const contains: { <A>(a: A): (self: Iterable<A>) => boolean; <A>(self: Iterable<A>, a: A): boolean; }

Source

Since v2.0.0