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Module

x/rimbu/core/main/exports.ts>AsyncReducer.last

Rimbu is a TypeScript library focused on immutable, performant, and type-safe collections and other tools.
rimbu-org/rimbu
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variable AsyncReducer.last
import { AsyncReducer } from "https://deno.land/x/rimbu@0.13.1/core/main/exports.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

type

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