Returns (<T>(resA) => Result<E, U>)

resB if resA is a Ok.

Examples

import { and, err, ok } from "./result.ts";
import { assertEquals } from "../deps.ts";

const success = ok<number>(2);
const failure = err("not a 2");
const lateError = err("late error");
const earlyError = err("early error");
const anotherSuccess = ok("different result");

assertEquals(and(lateError)(success), lateError);
assertEquals(and<number, string>(success)(earlyError), earlyError);
assertEquals(and(lateError)(failure), failure);
assertEquals(and(anotherSuccess)(success), anotherSuccess);
Copy

• • <T>(resA): Result<E, U>

  • Type Parameters

    • T

    Parameters

    • resA: Result<E, T>

    Returns Result<E, U>