Left<L, R> class

Inheritance

• Object
• Either<L, R>
• Left

Available extensions

• EitherExitExt
• ExitExt
• ZIOEitherExt

Constructors

Left(L _value)

const

Properties

asZIO → ZIO<NoEnv, L, R>

no setter, override

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

toZIO → ZIO<NoEnv, E, A>

Available on Either<E, A>, provided by the ZIOEitherExt extension

Alias for ZIO.fromEither

no setter

value → L

Extract the value of type L inside the Left.

no setter

Methods

alt(covariant Either<L, R> orElse()) → Either<L, R>

Return the current Either if it is a Right, otherwise return the result of orElse.

override

andThen<R2>(covariant Either<L, R2> then()) → Either<L, R2>

If this Either is a Right, then return the result of calling then. Otherwise return Left.

inherited

ap<C>(covariant Either<L, C Function(R r)> a) → Either<L, C>

Apply the function contained inside a to change the value on the Right from type R to a value of type C.

inherited

bimap<C, D>(C mLeft(L l), D mRight(R b)) → Either<C, D>

Define two functions to change both the Left and Right value of the Either.

inherited

bind<R2>(Either<L, R2> f(R r)) → Either<L, R2>

Used to chain multiple functions that return a Either.

inherited

call<B>(covariant Either<L, B> chain) → Either<L, B>

Chain multiple functions having the same left type L.

inherited

chainFirst<C>(covariant Either<L, C> chain(R b)) → Either<L, R>

Chain a request that returns another Either, execute it, ignore the result, and return the same value as the current Either.

inherited

duplicate() → Either<L, Either<L, R>>

Wrap this Either inside another Either.

inherited

extend<Z>(Z f(Either<L, R> t)) → Either<L, Z>

Change the value of Either from type R to type Z based on the value of Either<L, R> using function f.

override

filterOrElse(bool f(R r), L onFalse(R r)) → Either<L, R>

If f applied on this Either as Right returns true, then return this Either. If it returns false, return the result of onFalse in a Left.

inherited

flatMap<C>(covariant Either<L, C> f(R a)) → Either<L, C>

Used to chain multiple functions that return a Either.

override

flatMapExit<B>(Exit<E, B> f(A _)) → Exit<E, B>

Available on Exit<E, A>, provided by the ExitExt extension

flatMapExitEither<B>(Either<E, B> f(A _)) → Exit<E, B>

Available on Exit<E, A>, provided by the ExitExt extension

getLeft() → Option<L>

Extract the value from Left in a Option.

override

getOrElse(R orElse(L l)) → R

Return the value inside this Either if it is a Right. Otherwise return result of onElse.

override

getRight() → Option<R>

Extract the value from Right in a Option.

inherited

isLeft() → bool

Return true when this Either is Left.

override

isRight() → bool

Return true when this Either is Right.

override

liftExit<E2>() → Exit<E2, A>

Available on Exit<E, A>, provided by the ExitExt extension

map<C>(C f(R a)) → Either<L, C>

If the Either is Right, then change its value from type R to type C using function f.

override

map2<C, D>(covariant Either<L, C> m1, D f(R b, C c)) → Either<L, D>

Change type of this Either based on its value of type R and the value of type C of another Either.

override

map3<C, D, E>(covariant Either<L, C> m1, covariant Either<L, D> m2, E f(R b, C c, D d)) → Either<L, E>

Change type of this Either based on its value of type R, the value of type C of a second Either, and the value of type D of a third Either.

override

mapFailure<E2>(E2 f(E _)) → Exit<E2, A>

Available on Exit<E, A>, provided by the ExitExt extension

mapLeft<C>(C f(L a)) → Either<C, R>

If the Either is Left, then change its value from type L to type C using function f.

override

match<C>(C onLeft(L l), C onRight(R r)) → C

Execute onLeft when value is Left, otherwise execute onRight.

override

matchExit<E2, B>(Either<E2, B> onFailure(E _), Either<E2, B> onSuccess(A _)) → Exit<E2, B>

Available on Exit<E, A>, provided by the ExitExt extension

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

orElse<L1>(Either<L1, R> onLeft(L l)) → Either<L1, R>

If this Either is Left, return the result of onLeft.

override

swap() → Either<R, L>

Swap the values contained inside the Left and Right of this Either.

override

toExit() → Exit<E, A>

Available on Either<E, A>, provided by the EitherExitExt extension

toNullable() → R?

Convert Either to nullable R?.

override

toOption() → Option<R>

Convert this Either to a Option:

override

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override