Option<T> class abstract

Represents a value that could be missing - an [option]al value.

If the value is present, then it will be wrapped in a Some instance. If the value is missing, then it will represented with a None instance.

Available Extensions

• OptionExtension

Constructors

Option()

const

Option.fromJson(dynamic json, T fromJsonT(dynamic json))

Adds support for the json_serializable package.

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson(Object? toJsonT(T v)) → Object?

Adds support for the json_serializable package.

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited