Event

sealed interface Event<out T>(source)

Represents the reactive signal types: value, error and complete, and holds their parameter values (a value, a Throwable, nothing).

Sequence grammar: value* (error | complete)

Types

Complete event.

A error event containing the error.

class Value<out T>(val value: T) : Event<T>

A value event containing the given value.

Returns the encapsulated error if this Event is an Event.Error, otherwise returns null.

Returns the encapsulated error if this Event is an Event.Error. Otherwise, throws a NoSuchElementException.

inline fun <T, R> Event<T>.flatMap(transform: (T) -> Event<R>): Event<R>

Returns the result of applying transform to this Event's value if this is a Event.Value. Otherwise, returns itself.

inline fun <T, R> Event<T>.map(transform: (T) -> R): Event<R>

When this Event is a Event.Value, return a Event.Value containing transformed value using transform. Otherwise, returns itself.

inline fun <T> Event<T>.valueOrDefault(defaultValue: T): T?

Returns the encapsulated value if this Event is a Event.Value, otherwise returns defaultValue.

inline fun <T> Event<T>.valueOrElse(defaultValue: (Throwable?) -> T): T

Returns the encapsulated value if this Event is a Event.Value, otherwise returns the result of calling defaultValue function.

inline fun <T> Event<T>.valueOrNull(): T?

Returns the encapsulated value if this Event is a Event.Value, otherwise returns null.

inline fun <T> Event<T>.valueOrThrow(): T

Returns the encapsulated value if this Event is a Event.Value. If this is Event.Error, throws the encapsulated error. Otherwise, throws a NoSuchElementException.