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• ReduceFunction.java

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io.ray.streaming.api.function.impl.ReduceFunction Maven / Gradle / Ivy

package io.ray.streaming.api.function.impl;

import io.ray.streaming.api.function.Function;

/**
 * Interface of reduce functions.
 *
 * @param  Type of the input data.
 */
@FunctionalInterface
public interface ReduceFunction extends Function {

  T reduce(T oldValue, T newValue);
}