Either<L, R> class abstract

Either represents a value of two possible types. An Either is either an Either.left or an Either.right.

Annotations

• @sealed
• @immutable

Constructors

Either()

Constructs an Either.

const

Either.left(L value)

The Left version of an Either.

const

factory

Either.right(R value)

The Right version of an Either.

const

factory

Properties

hashCode → int

The hash code for this object.

no setter, inherited

isLeft → bool

Returns whether this Either is an Either.left.

no setter

isRight → bool

Returns whether this Either is an Either.right.

no setter

left → L

Gets the right value if this is an Either.left or throws if this is a Either.right.

no setter

right → R

Gets the right value if this is an Either.right or throws if this is an Either.left.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

fold<T>(EitherMapper<T, L> leftMapper, EitherMapper<T, R> rightMapper) → T

Folds either the left or the right side of this disjunction.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited