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Module

x/ahh/src/option.ts>filter

Opinionated idiomatic features for TypeScript.
leonskidev/ahh-ts
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function filter
import { filter } from "https://deno.land/x/ahh@v0.12.1/src/option.ts";

Returns option if fn returns true and it is a Some.

Examples

Example 1

import { default as O, Option } from "./option.ts";

const num: Option<number> = 8;
const even = O.filter(num, (i) => i % 2 === 0);

console.log(even ?? "num is odd");

Parameters

option: Option<T>
fn: (_: T) => boolean