Option<T> class

Classe che permette di gestire un valore o la sua assenza

Implementers

• EmptyOption
• NoValue

Constructors

Option.none()

const

Option.some(T? _value)

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

isSome → bool

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

asIterable() → Iterable<T>

bind<R>(Option<R> f(T t)) → Option<R>

flatMap<R>(Iterable<R> f(T t)) → Iterable<R>

fold<R>(R none(), R some(T some)) → R

foreach(void f(T t)) → Option<void>

getOrElse(T defaultVal) → T

getOrElseBind(Option<T> f()) → Option<T>

getOrElseDo(T fallback()) → T

getOrElseMap(T f()) → Option<T>

map<R>(R f(T t)) → Option<R>

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toFuture() → Future<Option<T>>

toFutureOrElse(Future<Option<T>> future) → Future<Option<T>>

toFutureOrElseDo(Future<Option<T>> futureF()) → Future<Option<T>>

toString() → String

A string representation of this object.

inherited

toValidation() → Validation<Option<T>>

where(bool f(T t)) → Option<T>

Operators

operator ==(Object other) → bool

The equality operator.

inherited