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Module

x/fun/array.ts>lookup

A collection of algebraic data types, lenses, and schemables based on a light weight higher kinded type implementation. Written for deno.
baetheus/fun
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function lookup
import { lookup } from "https://deno.land/x/fun@v2.0.0-alpha.12/array.ts";

Lookup the value in an array at the given index. If the index is out of bounds this function returns none.

Examples

Example 1

import * as A from "./array.ts";
import { pipe } from "./fn.ts";

const result1 = pipe(
  [1, 2, 3],
  A.lookup(0),
); // Some(1)
const result2 = pipe(
  [1, 2, 3],
  A.lookup(100),
); // None

Parameters

index: number