AsyncReducer.last | /stream/async/async-reducer.ts | rimbu@1.2.1

Rimbu is a TypeScript library focused on immutable, performant, and type-safe collections and other tools.

variable AsyncReducer.last

import { AsyncReducer } from "https://deno.land/x/rimbu@1.2.1/stream/async/async-reducer.ts";
const { last } = AsyncReducer;

Returns an AsyncReducer that remembers the last input value.

Examples

Example 1

await AsyncStream.from(Stream.range{ amount: 10 })).reduce(AsyncReducer.last())
// => 9

{ <T>(): AsyncReducer<T, T | undefined>; <T, O>(otherwise: AsyncOptLazy<O>): AsyncReducer<T, T | O>; }