Method first

corpus/java/training/guava/collect/FluentIterable.java:489–492

Returns an Optional containing the first element in this fluent iterable. If the iterable is empty, Optional.absent() is returned. Stream equivalent: if the goal is to obtain any element, stream.findAny(); if it must specifically be the first element

()

   *     {@code iterator().next()} or {@link Iterables#getFirst} instead.
   */
  public final Optional<E> first() {
    Iterator<E> iterator = iterable.iterator();
    return iterator.hasNext() ? Optional.of(iterator.next()) : Optional.<E>absent();
  }

  /**
   * Returns an {@link Optional} containing the last element in this fluent iterable. If the