Function mapOr

mapOr<T, U>(orU: U, mapFn: (t: T) => U, maybe: Maybe<T>): U
Map over a Maybe instance and get out the value if maybe is a Just, or return a default value if maybe is a Nothing.

Examples
```
const length = (s: string) => s.length;

const justAString = Maybe.just('string');
const theStringLength = mapOr(0, length, justAString);
console.log(theStringLength); // 6

const notAString = Maybe.nothing<string>();
const notAStringLength = mapOr(0, length, notAString)
console.log(notAStringLength); // 0
```
Type Parameters
- T
  The type of the wrapped value.
- U
  The type of the wrapped value of the returned Maybe.
Parameters
- orU: U
  The default value to use if maybe is Nothing
- mapFn: (t: T) => U
  The function to apply the value to if Maybe is Just
- maybe: Maybe<T>
  The Maybe instance to map over.
Returns U
- Defined in maybe.ts:533
mapOr<T, U>(orU: U, mapFn: (t: T) => U): (maybe: Maybe<T>) => U
Map over a Maybe instance and get out the value if maybe is a Just, or return a default value if maybe is a Nothing.

Examples
```
const length = (s: string) => s.length;

const justAString = Maybe.just('string');
const theStringLength = mapOr(0, length, justAString);
console.log(theStringLength); // 6

const notAString = Maybe.nothing<string>();
const notAStringLength = mapOr(0, length, notAString)
console.log(notAStringLength); // 0
```
Type Parameters
- T
  The type of the wrapped value.
- U
  The type of the wrapped value of the returned Maybe.
Parameters
- orU: U
  The default value to use if maybe is Nothing
- mapFn: (t: T) => U
  The function to apply the value to if Maybe is Just
Returns (maybe: Maybe<T>) => U
- Defined in maybe.ts:534
mapOr<T, U>(orU: U): (mapFn: (t: T) => U) => (maybe: Maybe<T>) => U
Map over a Maybe instance and get out the value if maybe is a Just, or return a default value if maybe is a Nothing.

Examples
```
const length = (s: string) => s.length;

const justAString = Maybe.just('string');
const theStringLength = mapOr(0, length, justAString);
console.log(theStringLength); // 6

const notAString = Maybe.nothing<string>();
const notAStringLength = mapOr(0, length, notAString)
console.log(notAStringLength); // 0
```
Type Parameters
- T
  The type of the wrapped value.
- U
  The type of the wrapped value of the returned Maybe.
Parameters
- orU: U
  The default value to use if maybe is Nothing
Returns (mapFn: (t: T) => U) => (maybe: Maybe<T>) => U
- Defined in maybe.ts:535