alt

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

Provide an alternative FnEither in the event that an original FnEither returns Left.

@example

import * as FE from "./fn_either.ts";
import { pipe } from "./fn.ts";

const result = pipe(
  FE.left("Oh no I broke!"),
  FE.alt(FE.right("But I work")),
)(null); // Right("But I work")

function alt<A, B, D>(ub: FnEither<D, B, A>): (ua: FnEither<D, B, A>) => FnEither<D, B, A>;

alt<A, B, D>(ub: FnEither<D, B, A>): (ua: FnEither<D, B, A>) => FnEither<D, B, A>

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§Type Parameters

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§Parameters

ub: FnEither<D, B, A>

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§Return Type

(ua: FnEither<D, B, A>) => FnEither<D, B, A>

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