Reducer.single | /mod.ts | rimbu@1.2.0

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

actor base bimap bimultimap channel collection-types common core deep graph hashed list multimap multiset ordered proximity reactor sorted spy stream table typical

mod.ts (default module)

ArrowGraph

ArrowGraphHashed

ArrowGraphSorted

ArrowValuedGraph

ArrowValuedGraphHashed

ArrowValuedGraphSorted

EdgeValuedGraphHashed

EdgeValuedGraphSorted

HashMultiMapHashValue

HashMultiMapSortedValue

HashMultiSet

HashSet

HashTableHashColumn

HashTableSortedColumn

SortedMultiMapHashValue

SortedMultiMapSortedValue

SortedMultiSet

SortedSet

SortedTableHashColumn

SortedTableSortedColumn

variable Reducer.single

import { Reducer } from "https://deno.land/x/rimbu@1.2.0/mod.ts";
const { single } = Reducer;

Returns a Reducer that only produces an output value when having receives exactly one input value, otherwise will return the otherwise value or undefined.

type

{ <T>(): Reducer<T, T | undefined>; <T, O>(otherwise: OptLazy<O>): Reducer<T, T | O>; }