@thi.ng/transducers/frequencies.d.ts

Collection of ~170 lightweight, composable transducers, reducers, generators, iterators for functional data transformations

import type { Fn } from "@thi.ng/api";
import type { Reducer } from "./api.js";
export declare function frequencies<A>(): Reducer<A, Map<A, number>>;
export declare function frequencies<A>(src: Iterable<A>): Map<A, number>;
export declare function frequencies<A, B>(key: Fn<A, B>): Reducer<A, Map<B, number>>;
export declare function frequencies<A, B>(key: Fn<A, B>, src: Iterable<A>): Map<B, number>;
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