Failure

data class Failure<out E : Exception>(val reason: E) : Result<Nothing, E>

Constructors

constructor(reason: E)

infix inline fun <R, E : Exception, R2, E2 : Exception> Result<R2, E2>.failWith(block: (E2) -> E): R2

Return the value of the success case or fail with the exception returned from the "block" block.

Return the value of the success case or null.

Return the value of the success case or throws the exception.

inline fun <R, E : Exception, T> Result<R, E>.map(transform: (R) -> T): Result<T, E>

Creates a new Result with the value mapped to a new type.

inline fun <R, E : Exception, T : Exception> Result<R, E>.mapFailure(transform: (E) -> T): Result<R, T>

Creates a new Result with the exception mapped to a new type.

infix inline fun <R, E : Exception> Result<R, E>.onFailure(block: (E) -> Unit): Result<R, E>

Calls block if the result is a Failure.

inline fun <R, E : Exception> Result<R, E>.recover(transform: (E) -> R?): Result<R, E>

Provides a way to recover from a failure. The transform block is only called if the result is a Failure.