optional library

Classes

Optional<T>

Functions

filter<A, B>(Predicate<A> filter) → Optional<A> Function(Optional<A>)

flatMap<A, B>(Optional<B> flatMapper(A p1)) → Optional<B> Function(Optional<A>)

map<A, B>(B mapper(A p1)) → Optional<B> Function(Optional<A>)

of<T>(T value) → Optional<T>