Function mapOrElse

mapOrElse<T, U>(orElseFn: () => 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 use a function to construct a default value if maybe is Nothing.

Examples
```
const length = (s: string) => s.length;
const getDefault = () => 0;

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

const notAString = Maybe.nothing<string>();
const notAStringLength = mapOrElse(getDefault, 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
- orElseFn: () => U
  The function to apply if maybe is Nothing.
- mapFn: (t: T) => U
  The function to apply to the wrapped value if maybe is Just
- maybe: Maybe<T>
  The Maybe instance to map over.
Returns U
- Defined in maybe.ts:587
mapOrElse<T, U>(orElseFn: () => 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 use a function to construct a default value if maybe is Nothing.

Examples
```
const length = (s: string) => s.length;
const getDefault = () => 0;

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

const notAString = Maybe.nothing<string>();
const notAStringLength = mapOrElse(getDefault, 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
- orElseFn: () => U
  The function to apply if maybe is Nothing.
- mapFn: (t: T) => U
  The function to apply to the wrapped value if maybe is Just
Returns (maybe: Maybe<T>) => U
- Defined in maybe.ts:588
mapOrElse<T, U>(
orElseFn: () => 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 use a function to construct a default value if maybe is Nothing.

Examples

const length = (s: string) => s.length;
const getDefault = () => 0;

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

const notAString = Maybe.nothing<string>();
const notAStringLength = mapOrElse(getDefault, length, notAString)
console.log(notAStringLength); // 0

Function mapOrElse

Examples

Type Parameters

Parameters

Returns U

Examples

Type Parameters

Parameters

Returns (maybe: Maybe<T>) => U

Examples

Type Parameters

Parameters

Returns (mapFn: (t: T) => U) => (maybe: Maybe<T>) => U

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