Function orElse

orElse<T>(optB): ((optA) => Option<T>)
Returns the optional optA if it contains a value, otherwise calls optB and returns the result. The order of arguments is reversed because of that it is useful for partial applying.
Type Parameters
- T
Parameters
- optB: (() => Option<T>)
  The function to create a fallback optional.
  - - (): Option<T>
    - Returns Option<T>
Returns ((optA) => Option<T>)
optA or optB.

Examples
```
import { orElse, Option, some, none } from "./option.ts";
import { assertEquals } from "../deps.ts";

const nobody = orElse((): Option<string> => none());
const vikings = orElse((): Option<string> => some("vikings"));

assertEquals(vikings(some("barbarians")), some("barbarians"));
assertEquals(vikings(none()), some("vikings"));
assertEquals(nobody(none()), none());
```
- - (optA): Option<T>
  - Parameters
    - optA: Option<T>
    Returns Option<T>
- Defined in src/option.ts:372

Generated using TypeDoc