singleOrNull

ts

function singleOrNull<T>(array: readonly T[]): T | null

Returns single element, or null if the array is empty or has more than one element.

Samples

ts

import { singleOrNull } from 'kotlinic/collections'

const value1 = singleOrNull([1, 2, 3])
console.log(value1) // null

const value2 = singleOrNull([42])
console.log(value2) // 42