contramap | /examples/lazy.ts | fun@v2.0.0

A collection of algebraic data types, lenses, and schemables based on a light weight higher kinded type implementation. Written for deno.

function contramap

import { contramap } from "https://deno.land/x/fun@v2.0.0/examples/lazy.ts";

contramap<L, D>(value: (l: L) => D): <A>(ua: LazyFn<D, A>) => LazyFn<L, A>

Type Parameters

value: (l: L) => D