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Module

x/fun/mod.ts>these.fold

A collection of algebraic data types, lenses, and schemables based on a light weight higher kinded type implementation. Written for deno.
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function these.fold
import { these } from "https://deno.land/x/fun@v2.0.0-alpha.6/mod.ts";
const { fold } = these;

Parameters

onLeft: (b: B) => O
onRight: (a: A) => O
onBoth: (b: B, a: A) => O

Returns

(ta: These<B, A>) => O