effect-io-ai

Package: effect
Module: Option

Option.containsWith

Returns a function that checks if an Option contains a specified value, using a provided equivalence function.

Details

This function allows you to check whether an Option contains a specific value. It uses an equivalence function isEquivalent to compare the value inside the Option to the provided value. If the Option is Some and the equivalence function returns true, the result is true. If the Option is None or the values are not equivalent, the result is false.

Example

import { Number, Option } from "effect"

const contains = Option.containsWith(Number.Equivalence)

console.log(Option.some(2).pipe(contains(2)))
// Output: true

console.log(Option.some(1).pipe(contains(2)))
// Output: false

console.log(Option.none().pipe(contains(2)))
// Output: false

See

• contains for a version that uses the default Equivalence.

Signature

declare const containsWith: <A>(isEquivalent: (self: A, that: A) => boolean) => { (a: A): (self: Option<A>) => boolean; (self: Option<A>, a: A): boolean; }

Source

Since v2.0.0