Left<L, R> class

A class that represents the left value in an Either instance.

This class is used to indicate that an instance of Either contains a left value of type L.

Instances of Left are created using the constructor and take a value of type L as a parameter.

Inheritance

• Object
• Either<L, R>
• Left

Constructors

Left(L left)

Creates a new instance of Left with a value of type L.

const

Properties

hashCode → int

The hash code for this object.

no setter, override

isLeft → bool

A getter that returns a boolean indicating whether the instance of Either is a Left instance.

no setter, override

isRight → bool

A getter that returns a boolean indicating whether the instance of Either is a Right instance.

no setter, override

left → L

The left value of type L.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

fold<T>(T leftFn(L l), T rightFn(R r)) → T

A generic method that takes two functions, leftFn and rightFn, as parameters.

override

leftOrNull() → L?

Returns the value of the left property if the Either instance is a Left instance, otherwise returns null.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

rightOrNull() → R?

Returns the value of the Right property if the Either instance is a Right instance, otherwise returns null.

override

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override