Left<L, R> class

Left is for the error case

Inheritance

• Object
• Either<L, R>
• Left

Constructors

Left(L value)

Left is for the error case

Properties

hashCode → int

The hash code for this object.

no setter, inherited

isLeft → bool

Represents the left side of Either class which by convention is a "Failure".

no setter, inherited

isRight → bool

Represents the right side of Either class which by convention is a "Success"

no setter, inherited

left → L

A Left value

no setter, inherited

right → R

A Right value

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

value → L

A Left value

final

Methods

cast<F, S>() → Either<F, S>

Cast to new Left & Right type

override

either({required EitherCallback<L> onLeft, required EitherCallback<R> onRight}) → void

Either type result on Callback

override

map({required MapCallback<L> onLeft, required MapCallback<R> onRight}) → Either<L, R>

Return the Either result in one of these functions.

override

mapAsync({required AsyncMapCallback<L> onLeft, required AsyncMapCallback<R> onRight}) → Future<Either<L, R>>

Return the async Either result in one of these async functions.

override

maybeWhen<T>({WhenCallback<T, L>? onLeft, WhenCallback<T, R>? onRight, required MaybeCallback<T> orElse}) → T

The maybeWhen method is equivalent to when, but doesn't require all callbacks to be specified. On the other hand, it adds an extra orElse required parameter, for fallback behavior.

override

maybeWhenAsync<T>({AsyncWhenCallback<T, L>? onLeft, AsyncWhenCallback<T, R>? onRight, required AsyncMaybeCallback<T> orElse}) → Future<T>

The maybeWhenAsync method is equivalent to whenAsync, but doesn't require all callbacks to be specified. On the other hand, it adds an extra orElse required parameter, for fallback behavior.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

swap() → Either<R, L>

Swap Left and Right

inherited

toString() → String

A string representation of this object.

inherited

when<T>({required WhenCallback<T, L> onLeft, required WhenCallback<T, R> onRight}) → T

Return the result in one of these functions.

override

whenAsync<T>({required AsyncWhenCallback<T, L> onLeft, required AsyncWhenCallback<T, R> onRight}) → Future<T>

Return the async result in one of these async functions.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited