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/*
 * Copyright (c) 2016-present, RxJava Contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is
 * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
 * the License for the specific language governing permissions and limitations under the License.
 */

package io.reactivex.rxjava3.operators;

import io.reactivex.rxjava3.annotations.NonNull;
import io.reactivex.rxjava3.core.FlowableSubscriber;

/**
 * A {@link FlowableSubscriber} with an additional {@link #tryOnNext(Object)} method that
 * tells the caller the specified value has been accepted or not.
 *
 * 

This allows certain queue-drain or source-drain operators * to avoid requesting 1 on behalf of a dropped value. * * @param the value type * @since 3.1.1 */ public interface ConditionalSubscriber<@NonNull T> extends FlowableSubscriber { /** * Conditionally takes the value. * @param t the value to deliver * @return true if the value has been accepted, false if the value has been rejected * and the next value can be sent immediately */ boolean tryOnNext(@NonNull T t); }





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