Either<L, R> class abstract

One of the popular examples of Coproduct2 type.

It represents a value that can be either of type L or of type R. Usually L is assumed to be of Error type and R of Right type, e.g. in pseudo-code:

type Result<T> = Either<Exception, T>
Implemented types
Available Extensions

Constructors

Either.left(L value)
const
factory
Either.right(R value)
const
factory

Properties

hashCode → int
The hash code for this object.
read-onlyinherited
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited

Methods

combine<R2>(Either<L, R2> other) → Either<L, Product2<R, R2>>
flatMap<T>(Either<L, T> f(R)) → Either<L, T>
fold<T>(T onLeft(L), T onRight(R)) → T
override
isLeft() → bool
isRight() → bool
map<T>(T f(R)) → Either<L, T>
mapLeft<L1>(L1 f(L)) → Either<L1, R>
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