Function mapOrElse

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
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Typeparam

T The type of the wrapped value.

Typeparam

U The type of the wrapped value of the returned Maybe.