Option<T> class sealed

Implementers

Properties

hashCode → int
The hash code for this object.
no setterinherited
isNone → bool
no setter
isSome → bool
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

and<U>(Option<U> other) → Option<U>
andThen<U>(Option<U> toOption(T)) → Option<U>
copy() → Option<T>
expect(String message) → T
filter(bool predicate(T)) → Option<T>
inspect(void onSome(T)) → Option<T>
isNoneOr(bool test(T)) → bool
isSomeAnd(bool test(T)) → bool
map<U>(U toValue(T)) → Option<U>
mapOr<U>(U defaultValue, U toValue(T)) → U
mapOrElse<U>(U onNone(), U toValue(T)) → U
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
okOr<E extends Exception>(E err) → Result<T, E>
okOrElse<E extends Exception>(E onNone()) → Result<T, E>
or(Option<T> other) → Option<T>
orElse(Option<T> onNone()) → Option<T>
toString() → String
A string representation of this object.
inherited
unwrap() → T
unwrapOr(T defaultValue) → T
unwrapOrElse(T onNone()) → T
xor(Option<T> other) → Option<T>
zip<U>(Option<U> other) → Option<(T, U)>

Operators

operator ==(Object other) → bool
The equality operator.
inherited