import { R } from "https://deno.land/x/ahh@v0.10.0/mod.ts";
Return res if it is an Ok, or other.
Examples
import { R } from "./mod.ts";
console.log(R.or(1, 2)); // 1
console.log(R.or<number, Error, Error>(Error(), 2)); // 2
console.log(R.or(2, Error())); // 2
console.log(R.or(Error("a"), Error("b"))); // Error("b")