Optional<T> class abstract

Implementers

Constructors

Optional.of(T value)
factory
Optional.ofNullable(T? value)
factory

Properties

hashCode → int
The hash code for this object.
no setterinherited
hasValue → bool
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value → T?
no setter

Methods

map<R>(R? mapper(T value)) → Optional<R>
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
orElse(T getter()) → T
toString() → String
A string representation of this object.
inherited

Operators

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