text: /*
   * Copyright 2015 Facebook, Inc.
   *
   * 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.
   */
  #pragma once
  
  namespace folly { namespace fibers {
  
  /**
   * Schedules several tasks and blocks until all of them are completed.
   * In the process of their successfull completion given callback would be called
   * for each of them with the index of the task and the result it returned (if
   * not void).
   * If any of these n tasks throws an exception, this exception will be
   * re-thrown, but only when all tasks are complete. If several tasks throw
   * exceptions one of them will be re-thrown. Callback won't be called for
   * tasks that throw exception.
   *
   * @param first  Range of tasks to be scheduled
   * @param last
   * @param F      callback to call for each result.
   *               In case of each task returning void it should be callable
   *                  F(size_t id)
   *               otherwise should be callable
   *                  F(size_t id, Result)
   */
  template <class InputIterator, class F>
  inline void forEach(InputIterator first, InputIterator last, F&& f);
  
  }}  // folly::fibers
  
  #include <folly/experimental/fibers/ForEach-inl.h>
  