io.reactivex.rxjava3.core

Interface ObservableTransformer<Upstream,Downstream>

Type Parameters:

Upstream - the upstream value type

Downstream - the downstream value type

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface ObservableTransformer<Upstream,Downstream>

Interface to compose Observables.

Method Summary

Modifier and Type	Method and Description
@NonNull ObservableSource<Downstream>	apply(@NonNull Observable<Upstream> upstream) Applies a function to the upstream Observable and returns an ObservableSource with optionally different element type.

Method Detail

apply

@NonNull
@NonNull ObservableSource<Downstream> apply(@NonNull
                                                     @NonNull Observable<Upstream> upstream)

Applies a function to the upstream Observable and returns an ObservableSource with optionally different element type.

Parameters:

upstream - the upstream Observable instance

Returns:

the transformed ObservableSource instance