io.reactivex.observable.extensions

Interface FuseToMaybe<T>

Type Parameters:

T - the value type

public interface FuseToMaybe<T>

Interface indicating an operator implementation can be macro-fused back to Maybe in case the operator goes from Maybe to some other reactive type and then the sequence calls for toMaybe again:

 Single<Integer> single = Maybe.just(1).isEmpty();
 Maybe<Integer> maybe = single.toMaybe();
 

The Single.toMaybe() will check for this interface and call the fuseToMaybe() to return a Maybe which could be the Maybe-specific implementation of isEmpty().

This causes a slight overhead in assembly time (1 instanceof check, 1 operator allocation and 1 dropped operator) but does not incur the conversion overhead at runtime.

Method Summary

Modifier and Type	Method and Description
Maybe<T>	fuseToMaybe() Returns a (direct) Maybe for the operator.

Method Detail

fuseToMaybe

Maybe<T> fuseToMaybe()

Returns a (direct) Maybe for the operator.

The implementation should handle the necessary RxJavaPlugins wrapping.

Returns:

the Maybe instance