mapSecond

import { mapSecond } from "https://github.gh-proxy.cn/raw.githubusercontent.com/baetheus/fun/main/pair.ts";

Creates a new Pair with the same first value and a new second value determined by the output of the fbj function.

@example

import * as P from "./pair.ts";
import { pipe } from "./fn.ts";

const result = pipe(
  P.pair(1, 2),
  P.mapSecond(String),
); // [1, '2']

function mapSecond<B, J>(fbj: (a: B) => J): <A>(ta: Pair<A, B>) => Pair<A, J>;

mapSecond<B, J>(fbj: (a: B) => J): <A>(ta: Pair<A, B>) => Pair<A, J>

fbj: (a: B) => J