Failure<T, E> class final

A failed result containing error.

Inheritance

• Object
• Result<T, E>
• Failure

Constructors

Failure(E error)

const

Properties

error → E

The error value.

final

errorOrNull → E?

Returns the error or null.

no setter, override

hashCode → int

The hash code for this object.

no setter, override

isFailure → bool

Whether this result is a failure.

no setter, inherited

isSuccess → bool

Whether this result is a success.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

valueOrNull → T?

Returns the success value or null.

no setter, override

valueOrThrow → T

Returns the success value or throws the error.

no setter, override

Methods

flatMap<R>(Result<R, E> transform(T value)) → Result<R, E>

Chains another operation that returns a Result.

override

getOrElse(T orElse(E error)) → T

Returns the success value or computes a fallback from the error.

override

map<R>(R transform(T value)) → Result<R, E>

Maps the success value using transform, leaving failures unchanged.

override

mapError<R>(R transform(E error)) → Result<T, R>

Maps the error using transform, leaving successes unchanged.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

when<R>({required R success(T value), required R failure(E error)}) → R

Pattern-matches on success or failure, returning a result of type R.

override

Operators

operator ==(Object other) → bool

The equality operator.

override