Variable: next()

const next: <Value>(iterable) => [Optional<Value>, Iterable<Value>]

Defined in: optionals.d.ts:308

Returns a pair of iterables. If iterable is empty, then both of the returned iterables are empty. Otherwise, the first iterable contains the first value of iterable and the second iterable contains the rest of the values of iterable. The second iterable can only be iterated once.

Type Parameters

Value

Value

Parameters

iterable

Iterable<Value>

Returns

[Optional<Value>, Iterable<Value>]

Example

import { count, get, next } from 'lfi'

const [first, rest] = next([`sloth`, `lazy`, `sleep`])

console.log(get(first))
//=> sloth

console.log([...rest])
//=> [ 'lazy', 'sleep' ]

const [first2, rest2] = next([])

console.log(count(first2))
//=> 0

console.log(count(rest2))
//=> 0

Playground

Since

v0.0.1