Left<L, R> class

Represent the Left case of the Either monad, containing a value of type L.

Inheritance

• Object
• Either<L, R>
• Left

Constructors

Left(L value)

const

Properties

hashCode → int

The hash code for this object.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

value → L

final

Methods

combine<T>(Either<L, T> other, R combiner(R, T)) → Either<L, R>

Returns combined version of the two Either objects

override

flatMap<T>(Either<L, T> f(R value)) → Either<L, T>

Applies a function to the value in the Right case, and returns the result as a new Either instance.

override

fold<T>(T ifLeft(L left), T ifRight(R right)) → T

Applies a function to the value in the Right or Left case, and returns the result.

override

getOrElse(R defaultValue) → R

Returns the value inside the Right case or the provided default value.

override

map<T>(T f(R value)) → Either<L, T>

Applies a function to the value in the Right case. Returns a new Either instance with the result of the function.

override

mapLeft<T>(T f(L value)) → Either<T, R>

Applies a function to the value in the Left case.

Returns a new Either instance with the result of the function.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

orElse(Either<L, R> other) → Either<L, R>

Applies a function to the value in the Left case, and returns the result as a new Either instance.

override

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override