Result

Common
JVM
JS
Native
1.0
class Result<out T> : Serializable

Properties

Common
JVM
JS
Native
1.0

isFailure

Returns true if this instance represents a failed outcome. In this case isSuccess returns false.

val isFailure: Boolean
Common
JVM
JS
Native
1.0

isSuccess

Returns true if this instance represents a successful outcome. In this case isFailure returns false.

val isSuccess: Boolean

Functions

Common
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JS
Native
1.0

exceptionOrNull

Returns the encapsulated Throwable exception if this instance represents failure or null if it is success.

fun exceptionOrNull(): Throwable?
Common
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1.0

getOrNull

Returns the encapsulated value if this instance represents success or null if it is failure.

fun getOrNull(): T?
Common
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1.0

toString

Returns a string Success(v) if this instance represents success where v is a string representation of the value or a string Failure(x) if it is failure where x is a string representation of the exception.

fun toString(): String

Companion Object Functions

Common
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1.0

failure

Returns an instance that encapsulates the given Throwable as failure.

fun <T> failure(exception: Throwable): Result<T>
Common
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1.0

success

Returns an instance that encapsulates the given value as successful value.

fun <T> success(value: T): Result<T>

Extension Functions

Common
JVM
JS
Native
1.3

fold

Returns the result of onSuccess for the encapsulated value if this instance represents success or the result of onFailure function for the encapsulated Throwable exception if it is failure.

fun <R, T> Result<T>.fold(
    onSuccess: (value: T) -> R,
    onFailure: (exception: Throwable) -> R
): R
Common
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Native
1.3

getOrDefault

Returns the encapsulated value if this instance represents success or the defaultValue if it is failure.

fun <R, T : R> Result<T>.getOrDefault(defaultValue: R): R
Common
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Native
1.3

getOrElse

Returns the encapsulated value if this instance represents success or the result of onFailure function for the encapsulated Throwable exception if it is failure.

fun <R, T : R> Result<T>.getOrElse(
    onFailure: (exception: Throwable) -> R
): R
Common
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1.3

getOrThrow

Returns the encapsulated value if this instance represents success or throws the encapsulated Throwable exception if it is failure.

fun <T> Result<T>.getOrThrow(): T
Common
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Native
1.3

map

Returns the encapsulated result of the given transform function applied to the encapsulated value if this instance represents success or the original encapsulated Throwable exception if it is failure.

fun <R, T> Result<T>.map(
    transform: (value: T) -> R
): Result<R>
Common
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Native
1.3

mapCatching

Returns the encapsulated result of the given transform function applied to the encapsulated value if this instance represents success or the original encapsulated Throwable exception if it is failure.

fun <R, T> Result<T>.mapCatching(
    transform: (value: T) -> R
): Result<R>
Common
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Native
1.3

onFailure

Performs the given action on the encapsulated Throwable exception if this instance represents failure. Returns the original Result unchanged.

fun <T> Result<T>.onFailure(
    action: (exception: Throwable) -> Unit
): Result<T>
Common
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1.3

onSuccess

Performs the given action on the encapsulated value if this instance represents success. Returns the original Result unchanged.

fun <T> Result<T>.onSuccess(
    action: (value: T) -> Unit
): Result<T>
Common
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JS
Native
1.3

recover

Returns the encapsulated result of the given transform function applied to the encapsulated Throwable exception if this instance represents failure or the original encapsulated value if it is success.

fun <R, T : R> Result<T>.recover(
    transform: (exception: Throwable) -> R
): Result<R>
Common
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Native
1.3

recoverCatching

Returns the encapsulated result of the given transform function applied to the encapsulated Throwable exception if this instance represents failure or the original encapsulated value if it is success.

fun <R, T : R> Result<T>.recoverCatching(
    transform: (exception: Throwable) -> R
): Result<R>