OneOf4

sealed interface OneOf4<out T1, out T2, out T3, out T4> : OneOf(source)

Four-way discriminated union.

Types

value class Option1<T>(val value: T) : OneOf4<T, Nothing, Nothing, Nothing>

Represents the first alternative of the union. @property value payload chosen for the first branch.

value class Option2<T>(val value: T) : OneOf4<Nothing, T, Nothing, Nothing>

Represents the second alternative of the union. @property value payload chosen for the second branch.

value class Option3<T>(val value: T) : OneOf4<Nothing, Nothing, T, Nothing>

Represents the third alternative of the union. @property value payload chosen for the third branch.

value class Option4<T>(val value: T) : OneOf4<Nothing, Nothing, Nothing, T>

Represents the fourth alternative of the union. @property value payload chosen for the fourth branch.

open fun <R> select(when1: (T1) -> R, when2: (T2) -> R, when3: (T3) -> R, when4: (T4) -> R): R

Exhaustively handles the stored value by delegating to the matching lambda.