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Module

x/rambda/rambda.js>countBy

Faster and smaller alternative to Ramda
Latest
function countBy
import { countBy } from "https://deno.land/x/rambda@v9.2.0/rambda.js";

It counts elements in a list after each instance of the input list is passed through transformFn function.

Type Parameters

T extends unknown

Parameters

transformFn: (x: T) => any
list: T[]

Returns

Record<string, number>

Type Parameters

T extends unknown

Parameters

transformFn: (x: T) => any

Returns

(list: T[]) => Record<string, number>