content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.util;
  
  import java.util.Collection;
  import java.util.List;
  import java.util.function.Function;
  import java.util.stream.Collectors;
  
  /**
   * Convenience methods for working with streams.
   */
  public final class StreamUtils {
  
    /**
     * @param f the function to apply
     * @param collection a collection to map over
     * @param <T> the input type
     * @param <R> the output type
     * @return a list containing the elements of the collection with the function applied
     */
    public static <T, R> List<R> map(Function<T, R> f, Collection<T> collection) {
      return collection.stream().map(f).collect(Collectors.toList());
    }
  
    private StreamUtils() {} // prevent instantiation
  }
  