content: /*
   * Copyright (C) 2020 ActiveJ LLC.
   *
   * 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.activej.async.callback;
  
  import io.activej.reactor.Reactor;
  import org.jetbrains.annotations.Nullable;
  
  /**
   * Represents a universal Callback interface
   */
  @FunctionalInterface
  public interface Callback<T> {
  	/**
  	 * Performs action upon completion of some computation
  	 */
  	void accept(T result, @Nullable Exception e);
  
  	static <T> Callback<T> toAnotherReactor(Reactor anotherReactor, Callback<T> cb) {
  		return (result, e) -> anotherReactor.execute(() -> cb.accept(result, e));
  	}
  }
  